Can Eating Too Little Actually Damage Your Metabolism_ Exploring the Truths and Fallacies of ‘Metabolic Damage’

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    C a n e a t i n g t o o l i t t l e      

    a c t u a l l y d a m a g e y o u r    

    m e t a b o l i s m ?

    E x p l o r i n g t h e t r u t h s a n d f a l l a c i e s o f ‘ m e t a b o l i c d a m a g e ’ .  

    B y B r i a n S t . P i e r r e      

    T h e r e ’ s a l o t o f d i s c u s s i o n i n t h e f i t n e s s i n d u s t r y a b o u t    

    w h e t h e r c r a s h d i e t i n g c a n c a u s e m e t a b o l i c d a m a g e . I n t h i s      

    a r t i c l e , w e ’ l l t a k e o n t h i s i n t e r e s t i n g t o p i c a n d s e p a r a t e f a c t    

    f r o m f i c t i o n . W e ’ l l a l s o t e a c h y o u e x a c t l y w h y c r a s h d i e t s      

    m i g h t b e l i n k e d t o s t r u g g l i n g t o m a i n t a i n y o u r w e i g h t i n t h e      

    f u t u r e .    

    W a n t t o l i s t e n i n s t e a d o f r e a d ? D o w n l o a d t h e a u d i o      

    r e c o r d i n g h e r e …        

    + + + +      

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    D e s p i t e w o r k i n g o u t c o n s i s t e n t l y a n d i n t e n s e l y , p l u s e a t i n g      

    c a r e f u l l y , y o u ’ r e n o t l o s i n g w e i g h t ( o r n o t l o s i n g i t a s f a s t a s      

    y o u ’ d l i k e o r e x p e c t ) .  

    O r y o u w e r e       l o s i n g w e i g h t c o n s i s t e n t l y … u n t i l r e c e n t l y . N o w        

    y o u ’ r e s t u c k — e v e n t h o u g h y o u ’ r e w o r k i n g a s h a r d a s e v e r .  

    O r w h e n y o u w e r e y o u n g e r , y o u w e r e s u p e r f i t . M a y b e y o u d i d      

    f i t n e s s c o m p e t i t i o n s . M a y b e y o u d i d s o m e c r a s h d i e t s . B u t    

    n o w , e v e n w h e n y o u p u t i n t h e s a m e e f f o r t , y o u j u s t c a n ’ t s e e m        

    t o g e t a s l e a n .  

    “ I s m y m e t a b o l i s m d a m a g e d ? ”    

    C l i e n t s a s k u s t h i s q u e s t i o n a l l t h e t i m e . ( I f y o u ’ r e a t r a i n e r o r    

    c o a c h , y o u ’ v e p r o b a b l y h e a r d i t f r o m y o u r c l i e n t s t o o . )  

    C a n m o n t h s o r y e a r s o f d i e t i n g d o s o m e k i n d o f l o n g - t e r m          

    h a r m t o t h e w a y t h e h u m a n b o d y p r o c e s s e s f o o d ?      

    N o t e x a c t l y .  

    B u t g a i n i n g a n d l o s i n g f a t c a n      c h a n g e t h e w a y y o u r b r a i n      

    r e g u l a t e s y o u r b o d y w e i g h t .    

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    T o u n d e r s t a n d t h i s a n s w e r l e t ’ s e x p l o r e h o w h u m a n      

    m e t a b o l i s m a c t u a l l y w o r k s . T h e n w e ’ l l t a l k a b o u t w h e t h e r t h e      

    m e t a b o l i s m c a n a c t u a l l y b e d a m a g e d .  

    E n e r g y b a l a n c e : T h e l a w s o f    

    p h y s i c s s t i l l a p p l y .  

    Y o u n e e d a c e r t a i n a m o u n t o f e n e r g y ( i n t h e f o r m o f c a l o r i e s )  

    t o s t a y a l i v e , a s w e l l a s t o m o v e a r o u n d . Y o u c a n g e t t h i s      

    e n e r g y f r o m f o o d , o r y o u c a n r e t r i e v e i t f r o m s t o r e d e n e r g y      

    ( e . g . y o u r f a t t i s s u e ) .  

    I n t h e o r y :  

    I f y o u e a t l e s s e n e r g y t h a n y o u e x p e n d , y o u s h o u l d l o s e      

    w e i g h t .  

    I f y o u d o t h e o p p o s i t e ( i . e . e a t m o r e e n e r g y t h a n y o u      

    e x p e n d ) , y o u s h o u l d g a i n w e i g h t .  

    I n o t h e r w o r d s :

    * W e u s e t h e t e r m “ b o d y s t o r e s ” d e l i b e r a t e l y a s i t r e p r e s e n t s      

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    t h e t i s s u e s a v a i l a b l e f o r b r e a k d o w n ( f a t , m u s c l e , o r g a n , b o n e ,  

    e t c ) a n d e x c l u d e s w a t e r ( w h i c h c a n c h a n g e b o d y w e i g h t    

    i n d e p e n d e n t l y o f e n e r g y b a l a n c e ) .  

    T h i s r e l a t i o n s h i p b e t w e e n ‘ e n e r g y i n ’ a n d ‘ e n e r g y o u t ’ i s c a l l e d      

    t h e E n e r g y B a l a n c e E q u a t i o n      , a n d i t ’ s t h e m o s t c o m m o n l y      

    a c c e p t e d m o d e l f o r c a l c u l a t i n g a p e r s o n ’ s e n e r g y b a l a n c e a n d      

    h o w m u c h w e i g h t t h e y ’ l l l o s e o r g a i n o v e r t i m e .  

    W h i l e t h e E n e r g y B a l a n c e E q u a t i o n d e t e r m i n e s b o d y w e i g h t , i t    

    d o e s n ’ t t e l l u s m u c h a b o u t b o d y c o m p o s i t i o n , w h i c h i s      

    i n f l u e n c e d b y t h i n g s l i k e s e x h o r m o n e l e v e l s , m a c r o n u t r i e n t    

    i n t a k e ( e s p e c i a l l y p r o t e i n ) , e x e r c i s e s t y l e / f r e q u e n c y / i n t e n s i t y ,  

    a g e , m e d i c a t i o n u s e , g e n e t i c p r e d i s p o s i t i o n , a n d m o r e .  

    U n d e r s t a n d a b l y , p e o p l e g e t r e a l l y f r u s t r a t e d a n d c o n f u s e d      

    w i t h t h e E n e r g y B a l a n c e E q u a t i o n w h e n t h e n u m b e r s d o n ’ t    

    s e e m t o a d d u p , o r t h e i r r e s u l t s d o n ’ t m a t c h t h e i r e x p e c t a t i o n s .  

    ( T h i s i s a g o o d l e s s o n , b y t h e w a y , a b o u t t h e i m p o r t a n c e o f    

    a d j u s t i n g y o u r e x p e c t a t i o n s t o m a t c h o b s e r v a b l e r e a l i t y . )  

    A n d i t ’ s a f a i r f r u s t r a t i o n . M o s t o f t h e t i m e , t h e n u m b e r s d o n ’ t    

    a d d u p .    

    I m p o r t a n t l y :  

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    T h i s m i s m a t c h b e t w e e n e x p e c t a t i o n s v e r s u s r e a l i t y i s n o t   

    b e c a u s e t h e E n e r g y B a l a n c e E q u a t i o n i s w r o n g , o r a m y t h .    

    N o b o d y ’ s b o d y d e f i e s t h e l a w s o f p h y s i c s , e v e n t h o u g h i t    

    s e e m s l i k e t h a t s o m e t i m e s .  

    I t ’ s b e c a u s e t h e e q u a t i o n i s m o r e c o m p l i c a t e d t h a n i t    

    s o u n d s .    

    M a n y f a c t o r s a f f e c t t h e E n e r g y B a l a n c e E q u a t i o n ; t h e y a r e n ’ t    

    m u t u a l l y e x c l u s i v e . W h a t y o u d o t o ‘ e n e r g y i n ’ a f f e c t s w h a t    

    h a p p e n s t o ‘ e n e r g y o u t ’ . A n d v i c e v e r s a .  

    “ E a t l e s s , m o v e m o r e ” i s a g o o d s t a r t .     ( M o s t o f u s c o u l d      

    p r o b a b l y b e n e f i t f r o m e a t i n g a l i t t l e l e s s a n d g e t t i n g a l i t t l e      

    m o r e d a i l y a c t i v i t y . )  

    B u t t h a t a d v i c e a l o n e       i s n ’ t e n o u g h .     I t d o e s n ’ t t a k e a l l o f t h e      

    c o m p l e x , i n t e r s e c t i n g f a c t o r s i n t o a c c o u n t .  

    L e t ’ s t a k e a l o o k a t s o m e o f t h e s e f a c t o r s , s t a r t i n g w i t h t h e      

    ‘ e n e r g y i n ’ p a r t o f t h e e q u a t i o n .  

    ‘ E n e r g y i n ’ i s t r i c k i e r t h a n y o u      

    t h i n k .  

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    R e a s o n 1 : T h e n u m b e r o f c a l o r i e s i n a m e a l l i k e l y d o e s n ’ t    

    m a t c h t h e n u m b e r o f c a l o r i e s o n t h e l a b e l s o r m e n u .    

    T h i s m i g h t s o u n d h a r d t o b e l i e v e , b u t i t ’ s t r u e … t h e w a y      

    c o m p a n i e s ( a n d e v e n t h e g o v e r n m e n t ) c o m e u p w i t h c a l o r i e      

    a n d n u t r i e n t e s t i m a t e s i s i n c r e d i b l y c o m p l e x , r a t h e r i m p r e c i s e ,  

    a n d c e n t u r i e s - o l d . A s a r e s u l t , f o o d l a b e l s c a n b e o f f b y a s      

    m u c h a s 2 0 - 2 5 p e r c e n t .  

    A n d e v e n i f t h o s e f o o d l a b e l s w e r e c o r r e c t :  

    R e a s o n 2 : T h e a m o u n t o f e n e r g y a f o o d c o n t a i n s       i n t h e f o r m          

    o f c a l o r i e s i s n o t n e c e s s a r i l y t h e a m o u n t o f e n e r g y w e      

    a b s o r b , s t o r e , a n d / o r u s e .  

    R e m e m b e r t h a t t h e f o o d w e e a t h a s t o b e d i g e s t e d a n d      

    p r o c e s s e d b y o u r u n i q u e b o d i e s . T h e i n n u m e r a b l e s t e p s      

    i n v o l v e d i n d i g e s t i o n , p r o c e s s i n g , a b s o r p t i o n , s t o r a g e , a n d u s e      

    — a s w e l l a s o u r o w n i n d i v i d u a l p h y s i o l o g i c a l m a k e u p — c a n a l l  

    c h a n g e t h e e n e r g y b a l a n c e g a m e .  

    S o , f o r i n s t a n c e :  

    W e a b s o r b l e s s e n e r g y       f r o m m i n i m a l l y p r o c e s s e d      

    c a r b o h y d r a t e s , a n d f a t s , b e c a u s e t h e y ’ r e h a r d e r t o d i g e s t .  

    W e a b s o r b m o r e e n e r g y       f r o m h i g h l y p r o c e s s e d      

    http://www.precisionnutrition.com/food-labels

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    c a r b o h y d r a t e s a n d f a t s , b e c a u s e t h e y ’ r e e a s i e r t o d i g e s t .  

    ( T h i n k o f i t t h i s w a y : T h e m o r e “ p r o c e s s e d ” a f o o d i s , t h e      

    m o r e d i g e s t i o n w o r k i s a l r e a d y d o n e f o r y o u . )  

    F o r e x a m p l e , r e s e a r c h h a s s h o w n t h a t w e a b s o r b m o r e f a t    

    f r o m p e a n u t b u t t e r t h a n f r o m w h o l e p e a n u t s . T h e r e s e a r c h e r s      

    f o u n d t h a t a l m o s t 3 8 p e r c e n t o f t h e f a t i n p e a n u t s w a s      

    e x c r e t e d i n t h e s t o o l , r a t h e r t h a n a b s o r b e d b y t h e b o d y .  

    W h e r e a s s e e m i n g l y a l l o f t h e f a t i n t h e p e a n u t b u t t e r w a s      

    a b s o r b e d .  

    I n a d d i t i o n :  

    W e o f t e n a b s o r b m o r e e n e r g y       f r o m f o o d s t h a t a r e c o o k e d      

    ( a n d / o r c h o p p e d , s o a k e d , b l e n d e d ) b e c a u s e t h o s e      

    p r o c e s s e s b r e a k d o w n p l a n t a n d a n i m a l c e l l s , i n c r e a s i n g      

    t h e i r b i o a v a i l a b i l i t y .  

    W h e n e a t i n g r a w s t a r c h y f o o d s ( l i k e s w e e t p o t a t o e s ) , w e      

    a b s o r b v e r y f e w o f t h e c a l o r i e s . A f t e r c o o k i n g , h o w e v e r , t h e      

    s t a r c h e s a r e m u c h m o r e a v a i l a b l e t o u s , t r i p l i n g t h e n u m b e r o f    

    c a l o r i e s a b s o r b e d .  

    I n t e r e s t i n g l y , a l l o w i n g s t a r c h y f o o d s t o t h e n c o o l b e f o r e e a t i n g      

    t h e m d e c r e a s e s t h e a m o u n t o f c a l o r i e s w e c a n e x t r a c t f r o m        

    t h e m a g a i n . ( T h i s i s m o s t l y d u e t o t h e f o r m a t i o n o f r e s i s t a n t    

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    s t a r c h e s ) .  

    F i n a l l y :  

    W e m a y a b s o r b m o r e o r l e s s e n e r g y       d e p e n d i n g o n t h e      

    t y p e s o f b a c t e r i a i n o u r g u t .  

    S o m e p e o p l e h a v e l a r g e r p o p u l a t i o n s o f a B a c t e r o i d e t e s ( a      

    s p e c i e s o f b a c t e r i a ) , w h i c h a r e b e t t e r a t e x t r a c t i n g c a l o r i e s      

    f r o m t o u g h p l a n t c e l l w a l l s t h a n o t h e r b a c t e r i a s p e c i e s .  

    H e r e ’ s a n i n t e r e s t i n g e x a m p l e o f t h i s w h o l e p r o c e s s a t w o r k .  

    R e c e n t l y , U S D A r e s e a r c h e r s a s k e d t e s t s u b j e c t s t o c o n s u m e      

    4 5 g r a m s ( a b o u t 1 ½ s e r v i n g s ) o f w a l n u t s d a i l y f o r t h r e e w e e k s .  

    W h a t t h e y f o u n d w a s t h a t , o n a v e r a g e , p e o p l e o n l y a b s o r b e d      

    1 4 6 o f t h e 1 8 5 c a l o r i e s i n t h e n u t s . T h a t ’ s 7 9 p e r c e n t o f t h e      

    c a l o r i e c o n t e n t o n t h e l a b e l .  

    I n s i m i l a r r e s e a r c h , p e o p l e a l s o a b s o r b e d o n l y 8 0 p e r c e n t o f    

    t h e c a l o r i e s i n a l m o n d s , a n d 9 5 p e r c e n t o f t h e c a l o r i e s i n      

    p i s t a c h i o s .  

    B e y o n d t h e a v e r a g e , t h e r e w e r e i n d i v i d u a l d i f f e r e n c e s : S o m e      

    p e o p l e a b s o r b e d m o r e o f t h e e n e r g y i n t h e n u t s , w h i l e s o m e      

    a b s o r b e d l e s s ( l i k e l y d u e t o t h e d i f f e r i n g p o p u l a t i o n s o f    

    B l o g       S i g n I n      

    S H A R E      

       

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    b a c t e r i a i n t h e i r l a r g e i n t e s t i n e s ) .  

    I n t h e e n d , b y e a t i n g a d i e t r i c h i n w h o l e , m i n i m a l l y      

    p r o c e s s e d f o o d s ,     t h e n u m b e r o f c a l o r i e s y o u a b s o r b c a n b e      

    s i g n i f i c a n t l y l e s s t h a n w h a t y o u e x p e c t . P l u s t h e y r e q u i r e m o r e      

    c a l o r i e s t o d i g e s t .  

    C o n v e r s e l y ,   y o u w i l l a b s o r b m o r e c a l o r i e s b y e a t i n g l o t s o f   

    h i g h l y p r o c e s s e d f o o d s ,     p l u s b u r n f e w e r c a l o r i e s i n t h e      

    d i g e s t i v e p r o c e s s . ( I n a d d i t i o n , h i g h l y p r o c e s s e d f o o d s a r e l e s s      

    f i l l i n g , m o r e e n e r g y d e n s e , a n d m o r e l i k e l y t o c a u s e      

    o v e r e a t i n g . )  

    S i n c e t h e n u m b e r o f c a l o r i e s s o m e o n e t h i n k s       t h e y ’ r e      

    c o n s u m i n g c o u l d b e o f f b y 2 5 p e r c e n t ( o r m o r e ) , t h e i r c a r e f u l l y      

    c u r a t e d d a i l y i n t a k e o f 1 , 6 0 0 c a l o r i e s c o u l d r e a l l y b e 1 , 2 0 0 … o r    

    2 , 0 0 0 .  

    T h i s m e a n s :

    A s y o u c a n s e e , t h e r e ’ s a b i g m a r g i n o f e r r o r f o r e n e r g y i n p u t ,  

    e v e n i f y o u ’ r e a c o n s c i e n t i o u s c a l o r i e c o u n t e r . T h i s d o e s n ’ t    

    i n v a l i d a t e t h e E n e r g y B a l a n c e E q u a t i o n . I t j u s t m e a n s t h a t i f    

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      y o u w a n t a n a c c u r a t e c a l c u l a t i o n , y o u p r o b a b l y h a v e t o l i v e     

    i n a f a n c y m e t a b o l i c l a b .    

    F o r m o s t p e o p l e , i t ’ s n o t w o r t h t h e e f f o r t ( t h a t ’ s w h y P r e c i s i o n      

    N u t r i t i o n m o v e d t o a h a n d - b a s e d m e a s u r i n g m o d e l f o r    

    p o r t i o n s ) .  

    ‘ E n e r g y o u t ’ v a r i e s a l o t f r o m        

    p e r s o n t o p e r s o n .  

    ‘ E n e r g y o u t ’ — a g a i n , e n e r g y b u r n e d t h r o u g h d a i l y m e t a b o l i s m        

    a n d m o v i n g y o u a r o u n d — i s a d y n a m i c , a l w a y s - c h a n g i n g      

    v a r i a b l e .  

    T h e r e a r e f o u r k e y p a r t s t o t h i s c o m p l e x s y s t e m :  

    1 . R e s t i n g m e t a b o l i c r a t e ( R M R )  

    R M R i s t h e n u m b e r o f c a l o r i e s y o u b u r n e a c h d a y a t r e s t , j u s t    

    t o b r e a t h e , t h i n k , a n d l i v e . T h i s r e p r e s e n t s r o u g h l y 6 0 p e r c e n t    

    o f y o u r ‘ e n e r g y o u t ’ a n d d e p e n d s o n w e i g h t , b o d y      

    c o m p o s i t i o n , s e x , a g e , g e n e t i c p r e d i s p o s i t i o n , a n d p o s s i b l y      

    ( a g a i n ) t h e b a c t e r i a l p o p u l a t i o n o f y o u r g u t .  

    http://www.precisionnutrition.com/calorie-control-guide

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      A b i g g e r b o d y , i n g e n e r a l , h a s a h i g h e r R M R .   

    F o r i n s t a n c e :  

    A 1 5 0 - p o u n d m a n m i g h t h a v e a n R M R o f 1 5 8 3 c a l o r i e s a      

    d a y .  

    A 2 0 0 - p o u n d m a n m i g h t h a v e a n R M R o f 1 9 0 5 c a l o r i e s .  

    A 2 5 0 - p o u n d m a n m i g h t h a v e a n R M R o f 2 1 6 4 c a l o r i e s .  

    C r u c i a l l y , R M R v a r i e s u p t o 1 5 p e r c e n t f r o m p e r s o n t o p e r s o n . I f    

    y o u ’ r e t h a t 2 0 0 - p o u n d g u y w i t h a n R M R o f 1 9 0 5 c a l o r i e s ,  

    a n o t h e r g u y j u s t l i k e y o u o n t h e n e x t t r e a d m i l l m i g h t b u r n 2 8 6      

    m o r e ( o r f e w e r ) c a l o r i e s e a c h d a y w i t h n o m o r e ( o r l e s s ) e f f o r t .  

    2 . T h e r m i c e f f e c t o f e a t i n g ( T E E )  

    T h i s m a y s u r p r i s e y o u , b u t i t t a k e s e n e r g y t o d i g e s t f o o d .  

    D i g e s t i o n i s a n a c t i v e m e t a b o l i c p r o c e s s . ( E v e r h a d t h e “ m e a t    

    s w e a t s ” o r f e l t h o t a f t e r a b i g m e a l , e s p e c i a l l y o n e w i t h l o t s o f    

    p r o t e i n ? T h a t ’ s T E E . )  

    T E E i s t h e n u m b e r o f c a l o r i e s y o u b u r n b y e a t i n g , d i g e s t i n g ,  

    a n d p r o c e s s i n g y o u r f o o d . T h i s r e p r e s e n t s r o u g h l y 5 - 1 0      

    p e r c e n t o f y o u r ‘ e n e r g y o u t ’ .  

    I n g e n e r a l , y o u ’ l l b u r n m o r e c a l o r i e s i n y o u r e f f o r t t o d i g e s t a n d      

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    a b s o r b p r o t e i n ( 2 0 - 3 0 p e r c e n t o f i t s c a l o r i e s ) a n d c a r b s ( 5 - 6      

    p e r c e n t ) t h a n y o u d o f a t s ( 3 p e r c e n t ) .  

    A n d a s n o t e d b e f o r e , y o u ’ l l b u r n m o r e c a l o r i e s d i g e s t i n g      

    m i n i m a l l y p r o c e s s e d w h o l e f o o d s c o m p a r e d t o h i g h l y      

    p r o c e s s e d f o o d s .  

    3 . P h y s i c a l a c t i v i t y ( P A )  

    P A i s t h e c a l o r i e s y o u b u r n f r o m p u r p o s e f u l e x e r c i s e , s u c h a s      

    w a l k i n g , r u n n i n g , g o i n g t o t h e g y m , g a r d e n i n g , r i d i n g a b i k e ,  

    e t c .  

    O b v i o u s l y , h o w m u c h e n e r g y y o u e x p e n d t h r o u g h P A w i l l  

    c h a n g e d e p e n d i n g o n h o w m u c h y o u i n t e n t i o n a l l y m o v e      

    a r o u n d .  

    4 . N o n - e x e r c i s e a c t i v i t y t h e r m o g e n e s i s      

    ( N E A T )  

    N E A T i s t h e c a l o r i e s y o u b u r n t h r o u g h f i d g e t i n g , s t a y i n g      

    u p r i g h t , a n d a l l o t h e r p h y s i c a l a c t i v i t i e s e x c e p t p u r p o s e f u l  

    e x e r c i s e . T h i s , t o o , v a r i e s f r o m p e r s o n t o p e r s o n a n d d a y t o      

    d a y .  

    T h i s m e a n s :

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    E a c h o f t h e s e i s h i g h l y v a r i a b l e . W h i c h m e a n s t h e ‘ e n e r g y o u t ’  

    s i d e o f t h e e q u a t i o n m a y b e j u s t a s h a r d t o p i n d o w n a s t h e      

    “ e n e r g y i n ” s i d e .  

    S o , w h i l e t h e E n e r g y B a l a n c e E q u a t i o n s o u n d s s i m p l e i n      

    p r i n c i p l e , a l l t h e s e v a r i a b l e s m a k e i t h a r d t o k n o w o r c o n t r o l  

    e x a c t l y h o w m u c h e n e r g y y o u ’ r e t a k i n g i n , a b s o r b i n g ,    

    b u r n i n g , a n d s t o r i n g .    

    H e r e ’ s t h e e n t i r e e q u a t i o n :

    W h e n y o u t r y t o o u t s m a r t y o u r    

    b o d y a n d i t o u t s m a r t s y o u b a c k .  

    E v e n i f a l l t h e v a r i a b l e s i n t h e f i n a l e q u a t i o n a b o v e w e r e s t a t i c ,  

    t h e E n e r g y B a l a n c e E q u a t i o n w o u l d b e c o m p l i c a t e d e n o u g h .  

    B u t t h i n g s g e t c r a z y w h e n y o u c o n s i d e r t h a t a l t e r i n g a n y o n e      

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    o f t h e v a r i a b l e s c a u s e s a d j u s t m e n t s i n o t h e r , s e e m i n g l y      

    u n r e l a t e d v a r i a b l e s .  

    T h i s i s a g o o d t h i n g , o f c o u r s e . O u r h u m a n m e t a b o l i s m s      

    e v o l v e d t o k e e p u s a l i v e a n d f u n c t i o n i n g w h e n f o o d w a s      

    s c a r c e . O n e c o n s e q u e n c e :  

    W h e n ‘ e n e r g y i n ’ g o e s d o w n , ‘ e n e r g y o u t ’ g o e s d o w n t o      

    m a t c h i t . ( Y o u b u r n f e w e r c a l o r i e s i n r e s p o n s e t o e a t i n g l e s s ) .  

    N o t i n e v e r y b o d y . A n d n o t p e r f e c t l y . B u t t h a t ’ s h o w t h e s y s t e m        

    i s s u p p o s e d t o w o r k . T h a t ’ s h o w o u r b o d i e s a v o i d u n w a n t e d      

    w e i g h t l o s s a n d s t a r v a t i o n . I t ’ s h o w h u m a n s h a v e s u r v i v e d f o r    

    2 m i l l i o n y e a r s . T h e b o d y f i g h t s t o m a i n t a i n h o m e o s t a s i s .  

    L i k e w i s e , w h e n ‘ e n e r g y i n ’ g o e s u p , ‘ e n e r g y o u t ’ t e n d s t o g o      

    u p t o o .     ( Y o u b u r n m o r e c a l o r i e s i n r e s p o n s e t o e a t i n g m o r e ) .  

    T o i l l u s t r a t e t h i s p o i n t , h e r e ’ s h o w y o u r b o d y t r i e s t o k e e p y o u r    

    w e i g h t s t e a d y w h e n y o u t a k e i n l e s s e n e r g y a n d s t a r t t o l o s e      

    w e i g h t * .  

    T h e r m i c e f f e c t o f e a t i n g       g o e s d o w n b e c a u s e y o u ’ r e      

    e a t i n g l e s s .  

    R e s t i n g m e t a b o l i c r a t e       g o e s d o w n b e c a u s e y o u w e i g h      

    l e s s .  

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    C a l o r i e s b u r n e d t h r o u g h P h y s i c a l a c t i v i t y       g o d o w n s i n c e      

    y o u w e i g h l e s s .  

    N o n - e x e r c i s e a c t i v i t y t h e r m o g e n e s i s       g o e s d o w n a s y o u      

    e a t l e s s .  

    C a l o r i e s n o t a b s o r b e d       g o e s d o w n a n d y o u a b s o r b m o r e o f    

    w h a t y o u e a t .  

    * T h i s r e s p o n s e i s p a r t i c u l a r l y m o d e s t a t f i r s t . B u t t h e a d a p t a t i o n      

    r e a l l y r a m p s u p a s y o u l o s e m o r e w e i g h t . ( O r i f y o u ’ r e s t a r t i n g      

    o u t l e a n a n d t r y i n g t o g e t s u p e r - l e a n ) .  

    C h e c k o u t w h a t t h i s l o o k s l i k e :

    I n a d d i t i o n t o t h e s e t a n g i b l e e f f e c t s o n t h e e q u a t i o n , r e d u c i n g      

    a c t u a l c a l o r i e s e a t e n a l s o c a u s e s h u n g e r s i g n a l s       t o i n c r e a s e ,  

    c a u s i n g u s t o c r a v e ( a n d m a y b e e a t ) m o r e .  

    T h e n e t e f f e c t l e a d s t o a m u c h l o w e r r a t e o f w e i g h t l o s s t h a n      

    y o u m i g h t e x p e c t . I n s o m e c a s e s , i t c o u l d e v e n l e a d t o w e i g h t    

    r e - g a i n .  

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    T o a d d i n s u l t t o i n j u r y , a r i s e i n c o r t i s o l f r o m t h e s t r e s s o f    

    d i e t i n g c a n c a u s e o u r b o d i e s t o h o l d o n t o m o r e w a t e r , m a k i n g      

    u s f e e l “ s o f t e r ” a n d “ l e s s l e a n ” t h a n w e a c t u a l l y a r e .  

    I n t e r e s t i n g l y , t h i s i s j u s t o n e e x a m p l e       o f t h e a m a z i n g a n d      

    r o b u s t r e s p o n s e t o t r y i n g t o m a n i p u l a t e o n e v a r i a b l e ( i n t h i s      

    c a s e , a c t u a l c a l o r i e s e a t e n ) . T h e r e a r e s i m i l a r r e s p o n s e s w h e n      

    t r y i n g t o m a n i p u l a t e e a c h o f t h e o t h e r v a r i a b l e s i n t h e      

    e q u a t i o n .  

    F o r e x a m p l e , r e s e a r c h s u g g e s t s t h a t i n c r e a s i n g P h y s i c a l  

    a c t i v i t y       a b o v e a c e r t a i n t h r e s h o l d ( b y e x e r c i s i n g m o r e ) c a n      

    t r i g g e r :  

    I n c r e a s e d a p p e t i t e a n d m o r e a c t u a l c a l o r i e s e a t e n      

    D e c r e a s e d c a l o r i e s n o t a b s o r b e d       a s w e a b s o r b m o r e o f    

    w h a t w e e a t    

    D e c r e a s e d R M R       

    D e c r e a s e d N E A T        

    I n t h i s c a s e , h e r e ’ s w h a t t h e e q u a t i o n w o u l d l o o k l i k e :

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    I n t h e e n d , t h e s e a r e j u s t t w o o f t h e m a n y e x a m p l e s w e c o u l d      

    s h a r e . T h e p o i n t i s t h a t m e t a b o l i s m i s m u c h m o r e c o m p l i c a t e d      

    ( a n d i n t e r d e p e n d e n t ) t h a n m o s t p e o p l e t h i n k .  

    U n d e r s t a n d i n g e n e r g y b a l a n c e      

    m e a n s s e t t i n g b e t t e r e x p e c t a t i o n s      

    a b o u t b o d y c h a n g e .  

    I t ’ s i m p o r t a n t t o n o t e t h a t i f y o u h a v e l o t s o f b o d y f a t t o l o s e ,  

    m a n y o f t h e s e a d a p t a t i o n s ( i . e . l o w e r e d R M R , P A , N E A T , e t c )  

    d o n ’ t h a p p e n r i g h t a w a y . B u t , a s y o u b e c o m e l e a n e r , t h i s      

    “ a d a p t i v e t h e r m o g e n e s i s ” k i c k s i n .  

    I t ’ s a l s o i m p o r t a n t t o k n o w t h a t h o w y o u r m e t a b o l i s m r e a c t s      

    t o c h a n g e s i n e n e r g y b a l a n c e w i l l b e u n i q u e t o y o u .    

    H o w m u c h y o u c a n l o s e o r g a i n w i l l d e p e n d o n y o u r a g e , y o u r    

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    g e n e t i c m a k e u p , y o u r b i o l o g i c a l s e x , i f y o u ’ v e h a d r e l a t i v e l y      

    m o r e o r l e s s b o d y f a t a n d f o r h o w l o n g , w h a t m e d i c a t i o n s      

    y o u ’ r e t a k i n g , t h e m a k e u p o f y o u r m i c r o b i o m e … a n d p r o b a b l y      

    a w h o l e l o t o f f a c t o r s w e d o n ’ t e v e n k n o w a b o u t y e t .  

    B u t l e t ’ s t r y t o s i m u l a t e h o w t h i s c o u l d w o r k .    

    S c i e n t i s t s a t t h e N a t i o n a l I n s t i t u t e s o f H e a l t h h a v e s t u d i e d t h e      

    d a t a f r o m p e o p l e w h o h a v e l o s t w e i g h t , a n d c r e a t e d a      

    m a t h e m a t i c a l m o d e l t h a t r e p r e s e n t s h o w w e i g h t a n d f a t l o s s      

    a c t u a l l y h a p p e n s i n t h e r e a l w o r l d .  

    W e c a n p l a y w i t h i t , u s i n g t h e P r e c i s i o n N u t r i t i o n W e i g h t L o s s      

    C a l c u l a t o r .  

    L e t ’ s s t a r t w i t h a 4 0 - y e a r - o l d m a l e , w i t h a s t a r t i n g w e i g h t o f    

    2 3 5 l b s a n d a h e i g h t o f 5 ’ 1 0 ” . W e ’ l l c a l l h i m F r a n k .  

    F r a n k w o r k s a d e s k j o b , a n d i s o n l y l i g h t l y a c t i v e o u t s i d e o f    

    w o r k . T h i s c a l c u l a t e s t h a t h e n e e d s 2 , 9 7 6 c a l o r i e s o f e n e r g y      

    p e r d a y t o m a i n t a i n h i s c u r r e n t w e i g h t .  

    B y k n o c k i n g o f f 5 0 0 c a l o r i e s p e r d a y , h i s i n t a k e d r o p s t o 2 , 4 7 6      

    c a l o r i e s d a i l y . A n d h e d o e s n ’ t p l a n o n c h a n g i n g h i s p h y s i c a l  

    a c t i v i t y .  

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    N o w , y o u ’ v e p r o b a b l y h e a r d s o m e w h e r e t h a t a p o u n d i s      

    e q u i v a l e n t t o 3 , 5 0 0 c a l o r i e s , w h i c h m e a n s t h a t i f w e t a k e a w a y      

    t h o s e 5 0 0 c a l o r i e s f r o m F r a n k e v e r y d a y , h e s h o u l d l o s e 1    

    p o u n d p e r w e e k ( 5 0 0 x 7 d a y s = 3 5 0 0 c a l o r i e s ) .  

    H e s h o u l d e n d u p a t 1 8 3 l b s a f t e r o n e y e a r o f c o n s i s t e n t l y      

    e a t i n g 5 0 0 f e w e r c a l o r i e s e v e r y d a y . ( A c c o r d i n g t o t h i s m a t h ,  

    t h e n , h e w o u l d w e i g h 0 l b s w i t h i n 5 y e a r s , w h i c h s h o u l d r a i s e      

    s o m e r e d f l a g s . )  

    B u t w e k n o w i t d o e s n ’ t e x a c t l y w o r k t h i s w a y i n r e a l l i f e .  

    A t t h e e n d o f a y e a r , F r a n k g e t s o n t h e s c a l e . H e ’ s 2 0 5 l b s .  

    W h a t t h e h e l l ?      

    T h a t ’ s 2 2 p o u n d s m o r e t h a n I s h o u l d b e !    

    F r a n k r a g e s t o h i s w i f e M a r i a , w h o s m i l e s k n o w i n g l y . S h e ’ s 4 0      

    t o o , a n d h a s b e e n t r y i n g t o l o s e w e i g h t s i n c e h a v i n g t w o k i d s      

    i n h e r m i d - 3 0 s .  

    T e l l m e a b o u t i t , s h e s a y s . I ’ v e l o s t a n d g a i n e d t h e s a m e 1 0        

      p o u n d s o v e r a n d o v e r , e v e n t h o u g h I ’ v e b e e n e x e r c i s i n g       

    a n d e a t i n g p r e t t y h e a l t h y .  

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    T h e n t h e y b o t h t h i n k :  

    M a y b e I s h o u l d t r y t h a t j u i c e c l e a n s e a f t e r a l l . M y b o d y i s      

    o b v i o u s l y b r o k e n .  

    N o p e , n o b o d y i s b r o k e n . D o n ’ t h i t t h a t j u i c e c l e a n s e j u s t y e t .  

    I n s t e a d , F r a n k a n d M a r i a c o u l d b o t h b e n e f i t f r o m a c l e a r    

    u n d e r s t a n d i n g o f h o w w e i g h t l o s s a c t u a l l y w o r k s . T h e n t h e y      

    c a n s e t a p p r o p r i a t e b e h a v i o r g o a l s , a n d h a v e r e a l i s t i c      

    e x p e c t a t i o n s f o r t h e i r p r o g r e s s .  

    ( P o s t s c r i p t : F r a n k a n d M a r i a d e c i d e a g a i n s t t h e j u i c e f a s t a n d      

    e n r o l l i n P N C o a c h i n g . A t t h e e n d o f a y e a r , M a r i a ’ s “ o n l y ” l o s t    

    a t o t a l o f 7 l b s , b u t h a s g a i n e d 5 l b s o f m u s c l e [ w h i c h m e a n s      

    s h e ’ s l o s t 1 2 l b s o f f a t ] . H e r f i r m a r m s a n d g l o w i n g s k i n a r e t h e      

    e n v y o f t h e o t h e r m o m s . F r a n k i s d o w n t o a f i t 1 8 5 l b s a n d      

    t r y i n g t o f i g u r e o u t h o w t o c o n v i n c e M a r i a t h a t h e s h o u l d b u y a      

    m o u n t a i n b i k e . )  

    S o , d o e s d i e t i n g d a m a g e t h e      

    m e t a b o l i s m ?      

    D e s p i t e w h a t y o u m a y h a v e h e a r d :  

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    L o s i n g w e i g h t w o n ’ t “ d a m a g e ” y o u r m e t a b o l i s m .    

    B u t b e c a u s e o f t h e a d a p t a t i o n s y o u r b o d y u n d e r g o e s i n      

    r e s p o n s e t o f a t l o s s ( t o p r e v e n t t h a t f a t l o s s , i n f a c t ) , ‘ e n e r g y      

    o u t ’ f o r t h o s e w h o h a v e l o s t s i g n i f i c a n t w e i g h t w i l l a l w a y s b e      

    l o w e r t h a n f o r p e o p l e w h o w e r e a l w a y s l e a n .    

    R a t h e r :  

    L o s i n g w e i g h t , a n d k e e p i n g i t o f f , i s a c c o m p a n i e d b y      

    a d a p t i v e m e t a b o l i c , n e u r o e n d o c r i n e , a u t o n o m i c , a n d o t h e r    

    c h a n g e s .    

    T h e s e c h a n g e s m e a n t h a t w e e x p e n d l e s s e n e r g y — a r o u n d 5 -    

    1 0 p e r c e n t l e s s ( o r u p t o 1 5 p e r c e n t l e s s a t e x t r e m e l e v e l s ) t h a n      

    w h a t w o u l d b e p r e d i c t e d b a s e d o n j u s t w e i g h i n g l e s s .  

    U n f o r t u n a t e l y , b e c a u s e o f t h i s a d a p t i v e r e s p o n s e , s o m e o n e      

    w h o h a s d i e t e d d o w n w i l l o f t e n r e q u i r e 5 - 1 5 p e r c e n t f e w e r    

    c a l o r i e s p e r d a y t o m a i n t a i n t h e w e i g h t a n d p h y s i c a l a c t i v i t y      

    l e v e l t h a n s o m e o n e w h o h a s a l w a y s b e e n t h a t w e i g h t .  

    ( O r e v e n l e s s , p o t e n t i a l l y , b e c a u s e a s w e l e a r n e d i n t h e v e r y      

    b e g i n n i n g , t h e R M R o f p e o p l e o f t h e e x a c t s a m e      

    a g e / w e i g h t / e t c . c a n s t i l l v a r y b y u p t o a n o t h e r 1 5 p e r c e n t . )  

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    T h i s m e a n s s o m e o n e w h o w a s n e v e r o v e r w e i g h t m i g h t n e e d      

    2 , 5 0 0 c a l o r i e s t o m a i n t a i n t h e i r w e i g h t , w h i l e s o m e o n e w h o      

    h a d t o d i e t d o w n t o t h a t w e i g h t m a y n e e d o n l y 2 , 1 2 5 - 2 , 3 7 5      

    c a l o r i e s t o h o l d s t e a d y .  

    W e d o n ’ t k n o w h o w l o n g t h i s l o w e r e d e n e r g y e x p e n d i t u r e      

    l a s t s . S t u d i e s h a v e s h o w n t h a t i t c a n h a n g a r o u n d f o r u p t o 7      

    y e a r s a f t e r w e i g h t l o s s ( o r m o r e , 7 y e a r s i s a s f a r a s i t ’ s b e e n      

    s t u d i e d ) . T h i s l i k e l y m e a n s i t ’ s p e r m a n e n t , o r a t l e a s t    

    p e r s i s t e n t .  

    T h i s i s e x t r a r e l e v a n t f o r p e o p l e w h o h a v e r e p e a t e d l y d i e t e d ,    

    o r f o r f i t n e s s c o m p e t i t o r s w h o m a y r e p e a t e d l y f l u c t u a t e      

    b e t w e e n b e i n g e x t r e m e l y l e a n a n d b e i n g o v e r w e i g h t i n t h e      

    o f f - s e a s o n .    

    I d o n ’ t h a v e d a t a t o b a c k t h i s u p ( t o m y k n o w l e d g e n o o n e h a s      

    s t u d i e d i t ) , b u t a d a p t i v e t h e r m o g e n e s i s s e e m s t o r e a c t m o r e      

    s t r o n g l y o r m o r e r a p i d l y w i t h e a c h s u c c e s s i v e y o - y o o f    

    e x t r e m e b o d y f a t f l u c t u a t i o n s .  

    A l l o f t h i s e x p l a i n s w h y s o m e p e o p l e c a n f e e l l i k e t h e y ’ v e      

    “ d a m a g e d ” t h e i r m e t a b o l i s m t h r o u g h r e p e a t e d d i e t i n g . ( A n d      

    w h y s o m e e x p e r t s s u g g e s t “ m e t a b o l i c d a m a g e ” i s a r e a l t h i n g . )  

    B u t n o t h i n g r e a l l y h a s b e e n “ d a m a g e d ” .  

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    I n s t e a d , t h e i r b o d i e s h a v e j u s t b e c o m e p r e d i c t a b l y m o r e      

    s e n s i t i v e t o v a r i o u s h o r m o n e s a n d n e u r o t r a n s m i t t e r s . T h e i r    

    m e t a b o l i c r a t e s a r e u n d e r s t a n d a b l y l o w e r t h a n p r e d i c t e d b y      

      v a r i o u s l a b o r a t o r y e q u a t i o n s .   

    S o , w h e r e d o e s t h i s l e a v e u s ?      

    B o d y c h a n g e i s g o i n g t o b e h a r d e r    

    f o r s o m e p e o p l e , a n d e a s i e r f o r    

    o t h e r s .  

    T h a t c a n m e a n a l l p h y s i o l o g i c a l c h a n g e s : w e i g h t l o s s o r g a i n ,  

    f a t l o s s o r g a i n , a n d m u s c l e l o s s o r g a i n .  

    B u t e v e n i f y o u r b o d y m i g h t d e f e n d a g a i n s t w e i g h t l o s s , y o u      

    c a n s t i l l l o s e w e i g h t , g a i n m u s c l e , a n d d r a m a t i c a l l y c h a n g e      

      y o u r b o d y .   

    O u r m e n ’ s a n d w o m e n ’ s F i n a l i s t H a l l s o f F a m e a r e c l e a r    

    e v i d e n c e o f t h a t .  

    W h a t t o d o n e x t :

    http://www.precisionnutrition.com/pn-coaching-women-finalistshttp://www.precisionnutrition.com/pn-coaching-men-finalists

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    S o m e t i p s f r o m P r e c i s i o n N u t r i t i o n .  

    T h e p h y s i o l o g y o f w e i g h t l o s s i s c o m p l i c a t e d , b u t t h e b e s t    

    s t r a t e g i e s f o r l o s i n g f a t a n d k e e p i n g i t o f f d o n ’ t h a v e t o b e .  

    1 . E a t p l e n t y o f p r o t e i n .  

    P r o t e i n i s e s s e n t i a l w h e n l o s i n g w e i g h t / f a t f o r a f e w r e a s o n s .  

    P r o t e i n h e l p s y o u k e e p t h a t a l l - i m p o r t a n t l e a n b o d y m a s s      

    ( w h i c h i n c l u d e s c o n n e c t i v e t i s s u e s , o r g a n s , a n d b o n e a s      

    w e l l a s m u s c l e ) .  

    P r o t e i n s i g n i f i c a n t l y i n c r e a s e s s a t i e t y , w h i c h m e a n s y o u      

    f e e l f u l l e r d e s p i t e e a t i n g l e s s . ( A n d e a t i n g m o r e p r o t e i n      

    o f t e n c a u s e s p e o p l e t o e a t l e s s o v e r a l l . )  

    J u s t b y e a t i n g m o r e p r o t e i n y o u b u r n m o r e c a l o r i e s ,  

    b e c a u s e o f t h e i n c r e a s e d t h e r m i c e f f e c t o f e a t i n g .  

    F o r e x a m p l e , i f y o u ’ r e e a t i n g 2 , 5 0 0 c a l o r i e s d a i l y , 1 5 p e r c e n t    

    f r o m p r o t e i n , 5 0 p e r c e n t f r o m c a r b s , a n d 3 5 p e r c e n t f r o m f a t s      

    ( r o u g h l y a v e r a g e f o r U S a d u l t s ) , y o u ’ r e b u r n i n g a p p r o x i m a t e l y      

    1 8 5 c a l o r i e s p e r d a y t h r o u g h d i g e s t i o n .  

    M a i n t a i n y o u r t o t a l c a l o r i e i n t a k e b u t i n c r e a s e p r o t e i n t o 3 0      

    p e r c e n t , d r o p c a r b s t o 4 0 p e r c e n t , a n d w h i t t l e f a t t o 3 0      

    p e r c e n t , a n d y o u r T E E g o e s u p t o r o u g h l y 2 6 5 c a l o r i e s p e r    

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    d a y .  

    F o r m o s t a c t i v e m e n : 6 - 8 p a l m - s i z e d s e r v i n g s o f p r o t e i n      

    p e r d a y .  

    F o r m o s t a c t i v e w o m e n : 4 - 6 p a l m - s i z e d s e r v i n g s p e r d a y .  

    2 . E a t a w i d e v a r i e t y o f f r u i t s , v e g e t a b l e s ,  

    q u a l i t y c a r b s , a n d h e a l t h y f a t s .  

    V e g e t a b l e s a r e l o a d e d w i t h v i t a m i n s , m i n e r a l s , p h y t o n u t r i e n t s ,  

    w a t e r , a n d f i b e r t o h e l p y o u f i l l u p d u r i n g m e a l s , s t a y f u l l  

    b e t w e e n m e a l s , k e e p y o u h e a l t h y , a n d r e c o v e r f r o m y o u r    

    w o r k o u t s .  

    W e r e c o m m e n d 6 - 8 f i s t - s i z e d s e r v i n g s p e r d a y f o r m o s t    

    a c t i v e m e n .  

    A n d 4 - 6 f i s t - s i z e d s e r v i n g s p e r d a y f o r m o s t a c t i v e w o m e n .  

    T h e c a r b s w i l l f u e l t r a i n i n g , b o o s t l e p t i n ( a s u p e r i m p o r t a n t    

    h o r m o n e ) , k e e p u p s e x h o r m o n e s , a n d p r e v e n t f e e l i n g s o f    

    d e p r i v a t i o n .  

    A n d t h e f a t s a l s o k e e p u p s e x h o r m o n e s , b o o s t t h e i m m u n e      

    s y s t e m , s u p p r e s s e x c e s s i n f l a m m a t i o n , a n d m a k e f o o d t a s t e      

    r e a l l y g o o d .  

    http://www.precisionnutrition.com/calorie-control-guide

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    F o r m o s t a c t i v e m e n , t h i s w o u l d b e 6 - 8 h a n d f u l s o f q u a l i t y      

    c a r b s , a n d 6 - 8 t h u m b s o f h e a l t h y f a t s p e r d a y .  

    F o r m o s t a c t i v e w o m e n , 4 - 6 h a n d f u l s o f q u a l i t y c a r b s a n d      

    4 - 6 t h u m b s o f h e a l t h y f a t s p e r d a y .  

    3 . A d j u s t y o u r i n t a k e a s y o u p l a t e a u , o r t o      

    p r e v e n t p l a t e a u s .  

    A s y o u r w e i g h t l o s s p r o g r e s s e s , y o u w i l l n e e d t o l o w e r y o u r    

    c a l o r i e i n t a k e f u r t h e r t o c o n t i n u e t o p r o g r e s s , a s y o u r s m a l l e r    

    b o d y w i l l b u r n f e w e r c a l o r i e s , a n d y o u r b o d y i s a d a p t i n g t o      

    y o u r d i e t .  

    B e r e a d y , w i l l i n g , a n d a b l e t o a d j u s t p o r t i o n a m o u n t s b y      

    r e m o v i n g 1 - 2 h a n d f u l s o f c a r b s a n d / o r 1 - 2 t h u m b s o f f a t s f r o m        

    y o u r d a i l y i n t a k e . T h e n r e a s s e s s a n d c o n t i n u e t o a d j u s t a s      

    n e e d e d .  

    H o w e v e r , o n e s t u d y f o u n d t h a t w e i g h t l o s s p l a t e a u s h a v e l e s s      

    t o d o w i t h m e t a b o l i c a d a p t a t i o n s a n d m o r e t o d o w i t h “ a n      

    i n t e r m i t t e n t l a c k o f d i e t a d h e r e n c e ” . I n o t h e r w o r d s , n o t    

    a c t u a l l y s t i c k i n g t o a n u t r i t i o n p l a n c o n s i s t e n t l y .  

    R e s e a r c h s h o w s t h a t w e u s u a l l y t h i n k w e ’ r e e a t i n g l e s s a n d      

    e x e r c i s i n g m o r e t h a n w e t r u l y a r e . S o d o a n o b j e c t i v e r e v i e w o f    

    y o u r a c t u a l     e n e r g y i n a n d o u t b e f o r e a s s u m i n g y o u r b o d y i s      

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    b l o c k i n g y o u r e f f o r t s .  

    4 . U n d e r s t a n d t h a t t h i s i s c o m p l e x .  

    S o m a n y t h i n g s i n f l u e n c e w h a t , w h y , a n d w h e n w e c h o o s e t o      

    e a t .  

    T o o o f t e n , e a t i n g a n d b o d y s i z e / f a t n e s s a r e b l a m e d o n l a c k o f    

    k n o w l e d g e , l a c k o f w i l l p o w e r / d i s c i p l i n e , o r l a z i n e s s . I n r e a l i t y ,  

    f o o d i n t a k e a n d b o d y c o m p o s i t i o n a r e g o v e r n e d b y a m i x o f    

    p h y s i o l o g i c a l , b i o l o g i c a l , p s y c h o l o g i c a l , s o c i a l , e c o n o m i c a l ,  

    a n d l i f e s t y l e i n f l u e n c e s , a l o n g w i t h i n d i v i d u a l k n o w l e d g e o r    

    b e l i e f s .  

    O n e o f t h e s i m p l e s t w a y s t o m a k e y o u r d e c i s i o n p r o c e s s e s      

    e a s i e r i s t o c r e a t e a n e n v i r o n m e n t t h a t e n c o u r a g e s g o o d f o o d      

    c h o i c e s a n d d i s c o u r a g e s p o o r o n e s . T h i s c a n m e a n m a k i n g      

    c h a n g e s t o y o u r d a i l y r o u t i n e , w h o y o u s p e n d t i m e w i t h , w h e r e      

    y o u s p e n d t i m e , a n d w h a t f o o d i s r e a d i l y a v a i l a b l e t o y o u .  

    B u t r e m e m b e r t h a t w e i g h t l o s s c a n a n d s h o u l d b e r e l a t i v e l y      

    s l o w , s o a i m t o l o s e a b o u t 0 . 5 - 1 p e r c e n t o f y o u r b o d y w e i g h t    

    p e r w e e k .    

    T h i s h e l p s t o m a i n t a i n m u s c l e m a s s a n d m i n i m i z e t h e a d a p t i v e      

    m e t a b o l i c r e s p o n s e s t o a l o w e r c a l o r i e i n t a k e a n d r e s u l t i n g      

    http://www.precisionnutrition.com/change-your-environment

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    w e i g h t l o s s . F a s t e r w e i g h t l o s s t e n d s t o r e s u l t i n m o r e m u s c l e      

    l o s s w i t h o u t e x t r a f a t l o s s , a s w e l l a s a l a r g e r a d a p t i v e      

    r e s p o n s e .  

    5 . C y c l e c a l o r i e s a n d c a r b s . *    

    * N o t e : T h i s i s a h i g h e r - l e v e l s t r a t e g y f o r f i t n e s s c o m p e t i t o r s      

    a n d e l i t e a t h l e t e s w h o n e e d t o g e t v e r y l e a n ( i . e . ~ 6 - 9 p e r c e n t    

    b o d y f a t f o r m e n , a n d ~ 1 6 - 1 9 p e r c e n t f o r w o m e n ) . I t ’ s n o t    

    s o m e t h i n g f o r t h e a v e r a g e p e r s o n .  

    F o r f o l k s w h o a r e t r y i n g t o g e t q u i t e l e a n , a t s o m e p o i n t y o u      

    c a n ’ t j u s t r e l y o n l i n e a r d i e t i n g t o g e t y o u t h e r e . B y s t r a t e g i c a l l y      

    c y c l i n g c a l o r i e s a n d c a r b s , y o u c a n h e l p t o l i m i t h o w m u c h t h e      

    m e t a b o l i s m - r e g u l a t i n g h o r m o n e l e p t i n d r o p s ( o r t e m p o r a r i l y      

    b o o s t i t b a c k u p ) – a t t e n u a t i n g t h e a d a p t i v e a n d h u n g e r    

    r e s p o n s e .  

    6 . R e f e e d p e r i o d i c a l l y . * *    

    * * N o t e : T h i s i s a h i g h e r - l e v e l s t r a t e g y f o r f i t n e s s c o m p e t i t o r s      

    a n d e l i t e a t h l e t e s w h o n e e d t o g e t v e r y l e a n ( i . e . < 6 p e r c e n t    

    b o d y f a t f o r m e n , a n d < 1 6 p e r c e n t f o r w o m e n ) .  

    W h e n g e t t i n g t o e x t r e m e l e v e l s o f l e a n n e s s , e v e n s t r a t e g i c      

    http://www.precisionnutrition.com/all-about-carb-cycling

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    c a l o r i e a n d c a r b c y c l i n g m i g h t n o t b e e n o u g h . S o t a k e o u t t h e      

    b i g g u n s , a n d e m p l o y s o m e p e r i o d i c r e - f e e d s t o t e m p o r a r i l y      

    b o o s t l e p t i n a n d i n s u l i n a n d k e e p f a t l o s s g o i n g .  

    7 . D o a m i x t u r e o f r e s i s t a n c e ,  

    c a r d i o v a s c u l a r , a n d r e c o v e r y a c t i v i t y .  

    R e s i s t a n c e t r a i n i n g h e l p s y o u m a i n t a i n v i t a l m u s c l e m a s s , b u r n      

    c a l o r i e s , a n d i m p r o v e g l u c o s e t o l e r a n c e . C a r d i o v a s c u l a r    

    e x e r c i s e i m p r o v e s t h e h e a l t h o f y o u r c a r d i o v a s c u l a r s y s t e m ,  

    h e l p s y o u e x p e n d e n e r g y , a n d c a n i m p r o v e r e c o v e r y .  

    B u t d o n ’ t o v e r d o e i t h e r o n e .  

    R e c o v e r y w o r k ( e . g . f o a m r o l l i n g , w a l k i n g , y o g a ) h e l p s y o u      

    m a i n t a i n c o n s i s t e n c y a n d i n t e n s i t y w i t h r e s i s t a n c e a n d c a r d i o      

    t r a i n i n g , m a k i n g t h e m m o r e e f f e c t i v e . A n d i t h e l p s t o d e c r e a s e      

    s t r e s s ( l o w e r i n g c o r t i s o l ) , w h i c h a l s o h e l p s y o u l o s e b o d y f a t    

    a n d k e e p i t o f f .  

    A i m f o r 3 - 5 h o u r s p e r w e e k o f p u r p o s e f u l a c t i v i t y .  

    8 . F i n d w a y s t o i n c r e a s e N E A T .  

    G e t a s t a n d - u p o r t r e a d m i l l d e s k , f i d g e t , p a c e w h e n o n t h e      

    p h o n e , t a k e t h e s t a i r s , p a r k f a r t h e r a w a y f r o m w h e r e y o u ’ r e      

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    g o i n g , e t c . T h e s e s m a l l i n c r e a s e s i n a c t i v i t y c a n m a k e a b i g      

    d i f f e r e n c e , a n d c a n a c c o u n t f o r h u n d r e d s o f d a i l y c a l o r i e s .  

    9 . D e v e l o p a s o l i d n i g h t l y s l e e p r o u t i n e      

    a n d m a n a g e y o u r s t r e s s .  

    S l e e p i s j u s t a s i m p o r t a n t t o y o u r s u c c e s s a s n u t r i t i o n a n d      

    a c t i v i t y l e v e l s . D o n ’ t p r e t e n d t h a t y o u c a n g e t b y w i t h l e s s . I t    

    s i m p l y i s n ’ t t r u e .  

    O f t e n , w h e n p e o p l e l o w e r t h e i r s t r e s s , t h e y l o s e a l o t o f b o d y      

    w a t e r . T h e n t h e y a l s o n o t i c e t h a t t h e y m a y h a v e l o s t f a t t o o .  

    ( P l u s , t h e y m a y d i s c o v e r t h a t c h r o n i c i n f l a m m a t i o n g o e s d o w n      

    — a n o t h e r w i n . )  

    T h i s i n c l u d e s m e n t a l a n d e m o t i o n a l s t r e s s . R e s e a r c h o n      

    c o g n i t i v e d i e t a r y r e s t r a i n t ( i . e . w o r r y i n g a n d s t r e s s i n g o u t a b o u t    

    f o o d ) s h o w s t h a t c o n s t a n t l y a n d n e g a t i v e l y f i x a t i n g o n w h a t    

    y o u e a t ( o r d o n ’ t ) c a n h a v e t h e s a m e u n h e a l t h y e f f e c t a s      

    a c t u a l l y d i e t i n g s t r i n g e n t l y .  

    Y e t w e n e e d s o m e s t r e s s t o a c t u a l l y h e l p w i t h p r o g r e s s a n d      

    g r o w t h , s o f i n d y o u r s t r e s s s w e e t s p o t .  

    1 0 . H a v e s o m e s e l f - c o m p a s s i o n .  

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    T h e r e a r e g o i n g t o b e m e a l s o r d a y s w h e r e y o u d o n ’ t e a t a s      

    y o u “ s h o u l d ” . I t ’ s O K . I t h a p p e n s t o e v e r y o n e . R e c o g n i z e i t ,  

    a c c e p t i t , f o r g i v e y o u r s e l f , a n d t h e n g e t b a c k o n t r a c k .  

    R e s e a r c h a c t u a l l y s h o w s t h a t s e l f - c o m p a s s i o n a n d f l e x i b l e      

    e a t i n g i s a s s o c i a t e d w i t h l o w e r B M I a n d a h e a l t h i e r b o d y      

    w e i g h t , l o w e r s e l f - r e p o r t e d c a l o r i e i n t a k e , l e s s a n x i e t y a n d      

    s t r e s s , a n d a b e t t e r r e l a t i o n s h i p w i t h f o o d .  

    A n d m a k e s u r e t h a t t h e b o d y y o u r e a l l y w a n t a l i g n s w i t h t h e      

    l i f e y o u r e a l l y e n j o y . U n d e r s t a n d w h a t i s r e q u i r e d t o r e a c h      

    d i f f e r e n t l e v e l s o f b o d y c o m p o s i t i o n . C o n s i d e r t h e i m p a c t t h a t    

    w i l l h a v e o n y o u r l i f e , a n d c h o o s e a c c o r d i n g l y .  

    S e e m a l i t t l e c o m p l i c a t e d ?      

    A f t e r r e a d i n g t h i s a r t i c l e , b a l a n c i n g y o u r d i e t a n d y o u r a c t i v i t y      

    m i g h t s e e m c o m p l i c a t e d . A n d , t h e t r u t h i s , i t ’ s c o m p l e t e l y      

    n o r m a l t o f e e l a l i t t l e o v e r y o u r h e a d . A t P r e c i s i o n N u t r i t i o n , i t ’ s      

    o u r m i s s i o n t o h e l p m a k e t h e p r o c e s s e a s i e r .  

    W o m e n a n d m e n i n o u r P r e c i s i o n N u t r i t i o n C o a c h i n g p r o g r a m s      

    l e a r n h o w t o b a l a n c e t h e i r f o o d i n t a k e a n d a c t i v i t y l e v e l s t o      

    f a c i l i t a t e w e i g h t l o s s a n d h e a l t h i m p r o v e m e n t s i n s u s t a i n a b l e ,  

    l o n g - t e r m w a y s .  

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    A n d f i t n e s s a n d h e a l t h p r o f e s s i o n a l s i n o u r L e v e l 1 a n d L e v e l  

    2 C e r t i f i c a t i o n p r o g r a m s l e a r n h o w t o h e l p t h e i r c l i e n t s d o t h e      

    s a m e .  

    C o m i n g W e d n e s d a y , A p r i l 1 3 t h .  

    I f y o u ’ r e a h e a l t h a n d f i t n e s s p r o a n d w o u l d l i k e t o l e a r n m o r e      

    a b o u t b e c o m i n g a n e l i t e , w o r l d - c l a s s n u t r i t i o n a n d l i f e s t y l e      

    c o a c h , c h e c k o u t o u r P r e c i s i o n N u t r i t i o n L e v e l 1    

    C e r t i f i c a t i o n p r o g r a m ; i t k i c k s o f f s o o n .  

    I m p o r t a n t : S i n c e w e o n l y t a k e a l i m i t e d n u m b e r o f s t u d e n t s      

    e a c h t i m e w e o f f e r t h e p r o g r a m , a n d i t s e l l s o u t e v e r y t i m e , t h e      

    b e s t s t r a t e g y i s t o a d d y o u r n a m e t o o u r f r e e p r e s a l e l i s t .  

    G e t t i n g o n t h e l i s t g i v e s y o u t h e c h a n c e t o s i g n u p f o r t h e      

    c e r t i f i c a t i o n 2 4 h o u r s b e f o r e e v e r y o n e e l s e . E v e n b e t t e r , y o u      

    s a v e b i g o n t h e c o s t o f t h e p r o g r a m .  

    [ O f c o u r s e , i f y o u ’ r e a l r e a d y a s t u d e n t o r g r a d u a t e o f t h e L e v e l  

    1 C e r t i f i c a t i o n , c h e c k o u t o u r L e v e l 2 C e r t i f i c a t i o n , a n e x c l u s i v e      

    M a s t e r C l a s s f o r e l i t e t r a i n e r s l o o k i n g t o p e r f e c t t h e i r n u t r i t i o n      

    k n o w l e d g e a n d c o a c h i n g t e c h n i q u e s ] .  

    http://precisionnutrition.com/precision-nutrition-level-2-certificationhttp://precisionnutrition.com/precision-nutrition-level-1-certificationhttp://www.precisionnutrition.com/certification-presale-listhttp://precisionnutrition.com/precision-nutrition-level-1-certificationhttp://precisionnutrition.com/precision-nutrition-level-2-certificationhttp://precisionnutrition.com/precision-nutrition-level-1-certification

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    R e f e r e n c e s      

    C l i c k h e r e t o v i e w t h e i n f o r m a t i o n s o u r c e s r e f e r e n c e d i n t h i s      

    a r t i c l e .  

    D o n ' t m i s s o u t . G e t o n t h e      

    P r e c i s i o n N u t r i t i o n L e v e l 1    

    C e r t i f i c a t i o n       p r e s a l e l i s t t o d a y .  

    I f y o u ' r e i n t e r e s t e d i n t h e P r e c i s i o n N u t r i t i o n L e v e l 1    

    C e r t i f i c a t i o n , w e s t r o n g l y r e c o m m e n d y o u j o i n t h e p r e s a l e l i s t    

    b e l o w .  

    W e ' l l s e n d y o u m o r e i n f o a b o u t t h e p r o g r a m , a n d g i v e y o u t h e      

    c h a n c e t o r e g i s t e r 2 4 h o u r s b e f o r e e v e r y o n e e l s e . Y o u ' l l a l s o      

    s a v e o v e r $ 2 0 0 .  

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