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SLEEP
Chapter 5 HuffmanCh 6 NairneChapter 5 HuffmanCh 6 NairneStates ofStates of ConsciousnessConsciousness
bull Consciousness an organismrsquos subjective awareness of internal and external events in its environment
bull Levels of awareness
ndashHIGH Controlled processes that require attention Concentration Ex Taking a test)
ndashMIDDLE Automatic processes requiring minimal attention (such as riding your bike)
ndashLOWEST Minimal or no awareness of the environment
bull Levels of awareness
ndashHIGH Controlled processes that require attention (and interfere with other functions)
ndashMIDDLE Automatic processes requiring minimal attention (such as riding your bike)bull Automaticity ndash fast and effortless processing that requires little or no focused attention
bull Levels of awareness
ndashHIGH Controlled processes that require attention (and interfere with other functions)
ndashMIDDLE Automatic processes requiring minimal attention (such as riding your bike)
ndashLOWEST Minimal or no awareness of the environment
Altered State of Consciousness
Awareness that is distinctly different in quality or pattern from waking consciousness
Sleep daydreaming dreaming hypnosis meditation intoxication
- Sleep helps to repair your body- Sleep helps keep your heart healthy - Sleep reduces stress - Sleep improves your memory- Sleep helps control body weight issues - Sleep reduces your chances of diabetes- Sleep reduces the occurrence of mood disorders- Teens need Approx 925hrs of sleep- We spend One third of our live in sleep mode
EEG Changes During Sleep
ndash Wakefulness as most of you are now beta activity
ndash Eyes closed alpha activity
EEG Changes During SleepStage 1 Light Sleep ndash Alpha Waves
Stage 2 Dreams in stages 1-4 stages deal with past events
EEG Changes During Sleep
bull Stage 4 almost all delta wavesndash Very hard to wake during this
stage
EEG Changes During Sleep
bull REM stage Rapid Eye Movement (saw-tooth pattern) Dreams usually deals with our future
bull BADmdashwave orderbull Betabull Alphabull Delta
p154 SLEEP CHART
p150 SUPRACHIASMATIC NUCLEUS
Biological idea
Circadian rhythms Occur every 24hours 1) Sleep-wake cycle 2) Body temp 3) Influenced by changes in routine
Jet lag New work shifts New work shifts
How much do we sleep compared toother species1048697 Giant sloth‐ 20 hoursday1048697 Giant armadillo‐18 hoursday1048697 Arctic ground squirrel‐ 16 hoursday1048697 Cat‐14 hoursday1048697 Gorilla‐12 hoursday1048697 Jaguar‐10 hoursday1048697 Chimp‐9 hoursday1048697 Human rabbit pig‐8 hoursday1048697 Gray seal‐6 hoursday1048697 Cow goat elephant‐3 hoursday1048697 Horse zebra‐2 hoursday
Theories of Sleepbull RepairRestoration
ndashSleep allows for recuperation from physical emotional and intellectual fatigue
bull Survival ValuendashSleep evolved to conserve energy
and protect our ancestors from predators
bull Consciousness an organismrsquos subjective awareness of internal and external events in its environment
bull Levels of awareness
ndashHIGH Controlled processes that require attention Concentration Ex Taking a test)
ndashMIDDLE Automatic processes requiring minimal attention (such as riding your bike)
ndashLOWEST Minimal or no awareness of the environment
bull Levels of awareness
ndashHIGH Controlled processes that require attention (and interfere with other functions)
ndashMIDDLE Automatic processes requiring minimal attention (such as riding your bike)bull Automaticity ndash fast and effortless processing that requires little or no focused attention
bull Levels of awareness
ndashHIGH Controlled processes that require attention (and interfere with other functions)
ndashMIDDLE Automatic processes requiring minimal attention (such as riding your bike)
ndashLOWEST Minimal or no awareness of the environment
Altered State of Consciousness
Awareness that is distinctly different in quality or pattern from waking consciousness
Sleep daydreaming dreaming hypnosis meditation intoxication
- Sleep helps to repair your body- Sleep helps keep your heart healthy - Sleep reduces stress - Sleep improves your memory- Sleep helps control body weight issues - Sleep reduces your chances of diabetes- Sleep reduces the occurrence of mood disorders- Teens need Approx 925hrs of sleep- We spend One third of our live in sleep mode
EEG Changes During Sleep
ndash Wakefulness as most of you are now beta activity
ndash Eyes closed alpha activity
EEG Changes During SleepStage 1 Light Sleep ndash Alpha Waves
Stage 2 Dreams in stages 1-4 stages deal with past events
EEG Changes During Sleep
bull Stage 4 almost all delta wavesndash Very hard to wake during this
stage
EEG Changes During Sleep
bull REM stage Rapid Eye Movement (saw-tooth pattern) Dreams usually deals with our future
bull BADmdashwave orderbull Betabull Alphabull Delta
p154 SLEEP CHART
p150 SUPRACHIASMATIC NUCLEUS
Biological idea
Circadian rhythms Occur every 24hours 1) Sleep-wake cycle 2) Body temp 3) Influenced by changes in routine
Jet lag New work shifts New work shifts
How much do we sleep compared toother species1048697 Giant sloth‐ 20 hoursday1048697 Giant armadillo‐18 hoursday1048697 Arctic ground squirrel‐ 16 hoursday1048697 Cat‐14 hoursday1048697 Gorilla‐12 hoursday1048697 Jaguar‐10 hoursday1048697 Chimp‐9 hoursday1048697 Human rabbit pig‐8 hoursday1048697 Gray seal‐6 hoursday1048697 Cow goat elephant‐3 hoursday1048697 Horse zebra‐2 hoursday
Theories of Sleepbull RepairRestoration
ndashSleep allows for recuperation from physical emotional and intellectual fatigue
bull Survival ValuendashSleep evolved to conserve energy
and protect our ancestors from predators
bull Levels of awareness
ndashHIGH Controlled processes that require attention Concentration Ex Taking a test)
ndashMIDDLE Automatic processes requiring minimal attention (such as riding your bike)
ndashLOWEST Minimal or no awareness of the environment
bull Levels of awareness
ndashHIGH Controlled processes that require attention (and interfere with other functions)
ndashMIDDLE Automatic processes requiring minimal attention (such as riding your bike)bull Automaticity ndash fast and effortless processing that requires little or no focused attention
bull Levels of awareness
ndashHIGH Controlled processes that require attention (and interfere with other functions)
ndashMIDDLE Automatic processes requiring minimal attention (such as riding your bike)
ndashLOWEST Minimal or no awareness of the environment
Altered State of Consciousness
Awareness that is distinctly different in quality or pattern from waking consciousness
Sleep daydreaming dreaming hypnosis meditation intoxication
- Sleep helps to repair your body- Sleep helps keep your heart healthy - Sleep reduces stress - Sleep improves your memory- Sleep helps control body weight issues - Sleep reduces your chances of diabetes- Sleep reduces the occurrence of mood disorders- Teens need Approx 925hrs of sleep- We spend One third of our live in sleep mode
EEG Changes During Sleep
ndash Wakefulness as most of you are now beta activity
ndash Eyes closed alpha activity
EEG Changes During SleepStage 1 Light Sleep ndash Alpha Waves
Stage 2 Dreams in stages 1-4 stages deal with past events
EEG Changes During Sleep
bull Stage 4 almost all delta wavesndash Very hard to wake during this
stage
EEG Changes During Sleep
bull REM stage Rapid Eye Movement (saw-tooth pattern) Dreams usually deals with our future
bull BADmdashwave orderbull Betabull Alphabull Delta
p154 SLEEP CHART
p150 SUPRACHIASMATIC NUCLEUS
Biological idea
Circadian rhythms Occur every 24hours 1) Sleep-wake cycle 2) Body temp 3) Influenced by changes in routine
Jet lag New work shifts New work shifts
How much do we sleep compared toother species1048697 Giant sloth‐ 20 hoursday1048697 Giant armadillo‐18 hoursday1048697 Arctic ground squirrel‐ 16 hoursday1048697 Cat‐14 hoursday1048697 Gorilla‐12 hoursday1048697 Jaguar‐10 hoursday1048697 Chimp‐9 hoursday1048697 Human rabbit pig‐8 hoursday1048697 Gray seal‐6 hoursday1048697 Cow goat elephant‐3 hoursday1048697 Horse zebra‐2 hoursday
Theories of Sleepbull RepairRestoration
ndashSleep allows for recuperation from physical emotional and intellectual fatigue
bull Survival ValuendashSleep evolved to conserve energy
and protect our ancestors from predators
bull Levels of awareness
ndashHIGH Controlled processes that require attention (and interfere with other functions)
ndashMIDDLE Automatic processes requiring minimal attention (such as riding your bike)bull Automaticity ndash fast and effortless processing that requires little or no focused attention
bull Levels of awareness
ndashHIGH Controlled processes that require attention (and interfere with other functions)
ndashMIDDLE Automatic processes requiring minimal attention (such as riding your bike)
ndashLOWEST Minimal or no awareness of the environment
Altered State of Consciousness
Awareness that is distinctly different in quality or pattern from waking consciousness
Sleep daydreaming dreaming hypnosis meditation intoxication
- Sleep helps to repair your body- Sleep helps keep your heart healthy - Sleep reduces stress - Sleep improves your memory- Sleep helps control body weight issues - Sleep reduces your chances of diabetes- Sleep reduces the occurrence of mood disorders- Teens need Approx 925hrs of sleep- We spend One third of our live in sleep mode
EEG Changes During Sleep
ndash Wakefulness as most of you are now beta activity
ndash Eyes closed alpha activity
EEG Changes During SleepStage 1 Light Sleep ndash Alpha Waves
Stage 2 Dreams in stages 1-4 stages deal with past events
EEG Changes During Sleep
bull Stage 4 almost all delta wavesndash Very hard to wake during this
stage
EEG Changes During Sleep
bull REM stage Rapid Eye Movement (saw-tooth pattern) Dreams usually deals with our future
bull BADmdashwave orderbull Betabull Alphabull Delta
p154 SLEEP CHART
p150 SUPRACHIASMATIC NUCLEUS
Biological idea
Circadian rhythms Occur every 24hours 1) Sleep-wake cycle 2) Body temp 3) Influenced by changes in routine
Jet lag New work shifts New work shifts
How much do we sleep compared toother species1048697 Giant sloth‐ 20 hoursday1048697 Giant armadillo‐18 hoursday1048697 Arctic ground squirrel‐ 16 hoursday1048697 Cat‐14 hoursday1048697 Gorilla‐12 hoursday1048697 Jaguar‐10 hoursday1048697 Chimp‐9 hoursday1048697 Human rabbit pig‐8 hoursday1048697 Gray seal‐6 hoursday1048697 Cow goat elephant‐3 hoursday1048697 Horse zebra‐2 hoursday
Theories of Sleepbull RepairRestoration
ndashSleep allows for recuperation from physical emotional and intellectual fatigue
bull Survival ValuendashSleep evolved to conserve energy
and protect our ancestors from predators
bull Levels of awareness
ndashHIGH Controlled processes that require attention (and interfere with other functions)
ndashMIDDLE Automatic processes requiring minimal attention (such as riding your bike)
ndashLOWEST Minimal or no awareness of the environment
Altered State of Consciousness
Awareness that is distinctly different in quality or pattern from waking consciousness
Sleep daydreaming dreaming hypnosis meditation intoxication
- Sleep helps to repair your body- Sleep helps keep your heart healthy - Sleep reduces stress - Sleep improves your memory- Sleep helps control body weight issues - Sleep reduces your chances of diabetes- Sleep reduces the occurrence of mood disorders- Teens need Approx 925hrs of sleep- We spend One third of our live in sleep mode
EEG Changes During Sleep
ndash Wakefulness as most of you are now beta activity
ndash Eyes closed alpha activity
EEG Changes During SleepStage 1 Light Sleep ndash Alpha Waves
Stage 2 Dreams in stages 1-4 stages deal with past events
EEG Changes During Sleep
bull Stage 4 almost all delta wavesndash Very hard to wake during this
stage
EEG Changes During Sleep
bull REM stage Rapid Eye Movement (saw-tooth pattern) Dreams usually deals with our future
bull BADmdashwave orderbull Betabull Alphabull Delta
p154 SLEEP CHART
p150 SUPRACHIASMATIC NUCLEUS
Biological idea
Circadian rhythms Occur every 24hours 1) Sleep-wake cycle 2) Body temp 3) Influenced by changes in routine
Jet lag New work shifts New work shifts
How much do we sleep compared toother species1048697 Giant sloth‐ 20 hoursday1048697 Giant armadillo‐18 hoursday1048697 Arctic ground squirrel‐ 16 hoursday1048697 Cat‐14 hoursday1048697 Gorilla‐12 hoursday1048697 Jaguar‐10 hoursday1048697 Chimp‐9 hoursday1048697 Human rabbit pig‐8 hoursday1048697 Gray seal‐6 hoursday1048697 Cow goat elephant‐3 hoursday1048697 Horse zebra‐2 hoursday
Theories of Sleepbull RepairRestoration
ndashSleep allows for recuperation from physical emotional and intellectual fatigue
bull Survival ValuendashSleep evolved to conserve energy
and protect our ancestors from predators
Altered State of Consciousness
Awareness that is distinctly different in quality or pattern from waking consciousness
Sleep daydreaming dreaming hypnosis meditation intoxication
- Sleep helps to repair your body- Sleep helps keep your heart healthy - Sleep reduces stress - Sleep improves your memory- Sleep helps control body weight issues - Sleep reduces your chances of diabetes- Sleep reduces the occurrence of mood disorders- Teens need Approx 925hrs of sleep- We spend One third of our live in sleep mode
EEG Changes During Sleep
ndash Wakefulness as most of you are now beta activity
ndash Eyes closed alpha activity
EEG Changes During SleepStage 1 Light Sleep ndash Alpha Waves
Stage 2 Dreams in stages 1-4 stages deal with past events
EEG Changes During Sleep
bull Stage 4 almost all delta wavesndash Very hard to wake during this
stage
EEG Changes During Sleep
bull REM stage Rapid Eye Movement (saw-tooth pattern) Dreams usually deals with our future
bull BADmdashwave orderbull Betabull Alphabull Delta
p154 SLEEP CHART
p150 SUPRACHIASMATIC NUCLEUS
Biological idea
Circadian rhythms Occur every 24hours 1) Sleep-wake cycle 2) Body temp 3) Influenced by changes in routine
Jet lag New work shifts New work shifts
How much do we sleep compared toother species1048697 Giant sloth‐ 20 hoursday1048697 Giant armadillo‐18 hoursday1048697 Arctic ground squirrel‐ 16 hoursday1048697 Cat‐14 hoursday1048697 Gorilla‐12 hoursday1048697 Jaguar‐10 hoursday1048697 Chimp‐9 hoursday1048697 Human rabbit pig‐8 hoursday1048697 Gray seal‐6 hoursday1048697 Cow goat elephant‐3 hoursday1048697 Horse zebra‐2 hoursday
Theories of Sleepbull RepairRestoration
ndashSleep allows for recuperation from physical emotional and intellectual fatigue
bull Survival ValuendashSleep evolved to conserve energy
and protect our ancestors from predators
- Sleep helps to repair your body- Sleep helps keep your heart healthy - Sleep reduces stress - Sleep improves your memory- Sleep helps control body weight issues - Sleep reduces your chances of diabetes- Sleep reduces the occurrence of mood disorders- Teens need Approx 925hrs of sleep- We spend One third of our live in sleep mode
EEG Changes During Sleep
ndash Wakefulness as most of you are now beta activity
ndash Eyes closed alpha activity
EEG Changes During SleepStage 1 Light Sleep ndash Alpha Waves
Stage 2 Dreams in stages 1-4 stages deal with past events
EEG Changes During Sleep
bull Stage 4 almost all delta wavesndash Very hard to wake during this
stage
EEG Changes During Sleep
bull REM stage Rapid Eye Movement (saw-tooth pattern) Dreams usually deals with our future
bull BADmdashwave orderbull Betabull Alphabull Delta
p154 SLEEP CHART
p150 SUPRACHIASMATIC NUCLEUS
Biological idea
Circadian rhythms Occur every 24hours 1) Sleep-wake cycle 2) Body temp 3) Influenced by changes in routine
Jet lag New work shifts New work shifts
How much do we sleep compared toother species1048697 Giant sloth‐ 20 hoursday1048697 Giant armadillo‐18 hoursday1048697 Arctic ground squirrel‐ 16 hoursday1048697 Cat‐14 hoursday1048697 Gorilla‐12 hoursday1048697 Jaguar‐10 hoursday1048697 Chimp‐9 hoursday1048697 Human rabbit pig‐8 hoursday1048697 Gray seal‐6 hoursday1048697 Cow goat elephant‐3 hoursday1048697 Horse zebra‐2 hoursday
Theories of Sleepbull RepairRestoration
ndashSleep allows for recuperation from physical emotional and intellectual fatigue
bull Survival ValuendashSleep evolved to conserve energy
and protect our ancestors from predators
EEG Changes During Sleep
ndash Wakefulness as most of you are now beta activity
ndash Eyes closed alpha activity
EEG Changes During SleepStage 1 Light Sleep ndash Alpha Waves
Stage 2 Dreams in stages 1-4 stages deal with past events
EEG Changes During Sleep
bull Stage 4 almost all delta wavesndash Very hard to wake during this
stage
EEG Changes During Sleep
bull REM stage Rapid Eye Movement (saw-tooth pattern) Dreams usually deals with our future
bull BADmdashwave orderbull Betabull Alphabull Delta
p154 SLEEP CHART
p150 SUPRACHIASMATIC NUCLEUS
Biological idea
Circadian rhythms Occur every 24hours 1) Sleep-wake cycle 2) Body temp 3) Influenced by changes in routine
Jet lag New work shifts New work shifts
How much do we sleep compared toother species1048697 Giant sloth‐ 20 hoursday1048697 Giant armadillo‐18 hoursday1048697 Arctic ground squirrel‐ 16 hoursday1048697 Cat‐14 hoursday1048697 Gorilla‐12 hoursday1048697 Jaguar‐10 hoursday1048697 Chimp‐9 hoursday1048697 Human rabbit pig‐8 hoursday1048697 Gray seal‐6 hoursday1048697 Cow goat elephant‐3 hoursday1048697 Horse zebra‐2 hoursday
Theories of Sleepbull RepairRestoration
ndashSleep allows for recuperation from physical emotional and intellectual fatigue
bull Survival ValuendashSleep evolved to conserve energy
and protect our ancestors from predators
EEG Changes During SleepStage 1 Light Sleep ndash Alpha Waves
Stage 2 Dreams in stages 1-4 stages deal with past events
EEG Changes During Sleep
bull Stage 4 almost all delta wavesndash Very hard to wake during this
stage
EEG Changes During Sleep
bull REM stage Rapid Eye Movement (saw-tooth pattern) Dreams usually deals with our future
bull BADmdashwave orderbull Betabull Alphabull Delta
p154 SLEEP CHART
p150 SUPRACHIASMATIC NUCLEUS
Biological idea
Circadian rhythms Occur every 24hours 1) Sleep-wake cycle 2) Body temp 3) Influenced by changes in routine
Jet lag New work shifts New work shifts
How much do we sleep compared toother species1048697 Giant sloth‐ 20 hoursday1048697 Giant armadillo‐18 hoursday1048697 Arctic ground squirrel‐ 16 hoursday1048697 Cat‐14 hoursday1048697 Gorilla‐12 hoursday1048697 Jaguar‐10 hoursday1048697 Chimp‐9 hoursday1048697 Human rabbit pig‐8 hoursday1048697 Gray seal‐6 hoursday1048697 Cow goat elephant‐3 hoursday1048697 Horse zebra‐2 hoursday
Theories of Sleepbull RepairRestoration
ndashSleep allows for recuperation from physical emotional and intellectual fatigue
bull Survival ValuendashSleep evolved to conserve energy
and protect our ancestors from predators
EEG Changes During Sleep
bull Stage 4 almost all delta wavesndash Very hard to wake during this
stage
EEG Changes During Sleep
bull REM stage Rapid Eye Movement (saw-tooth pattern) Dreams usually deals with our future
bull BADmdashwave orderbull Betabull Alphabull Delta
p154 SLEEP CHART
p150 SUPRACHIASMATIC NUCLEUS
Biological idea
Circadian rhythms Occur every 24hours 1) Sleep-wake cycle 2) Body temp 3) Influenced by changes in routine
Jet lag New work shifts New work shifts
How much do we sleep compared toother species1048697 Giant sloth‐ 20 hoursday1048697 Giant armadillo‐18 hoursday1048697 Arctic ground squirrel‐ 16 hoursday1048697 Cat‐14 hoursday1048697 Gorilla‐12 hoursday1048697 Jaguar‐10 hoursday1048697 Chimp‐9 hoursday1048697 Human rabbit pig‐8 hoursday1048697 Gray seal‐6 hoursday1048697 Cow goat elephant‐3 hoursday1048697 Horse zebra‐2 hoursday
Theories of Sleepbull RepairRestoration
ndashSleep allows for recuperation from physical emotional and intellectual fatigue
bull Survival ValuendashSleep evolved to conserve energy
and protect our ancestors from predators
EEG Changes During Sleep
bull REM stage Rapid Eye Movement (saw-tooth pattern) Dreams usually deals with our future
bull BADmdashwave orderbull Betabull Alphabull Delta
p154 SLEEP CHART
p150 SUPRACHIASMATIC NUCLEUS
Biological idea
Circadian rhythms Occur every 24hours 1) Sleep-wake cycle 2) Body temp 3) Influenced by changes in routine
Jet lag New work shifts New work shifts
How much do we sleep compared toother species1048697 Giant sloth‐ 20 hoursday1048697 Giant armadillo‐18 hoursday1048697 Arctic ground squirrel‐ 16 hoursday1048697 Cat‐14 hoursday1048697 Gorilla‐12 hoursday1048697 Jaguar‐10 hoursday1048697 Chimp‐9 hoursday1048697 Human rabbit pig‐8 hoursday1048697 Gray seal‐6 hoursday1048697 Cow goat elephant‐3 hoursday1048697 Horse zebra‐2 hoursday
Theories of Sleepbull RepairRestoration
ndashSleep allows for recuperation from physical emotional and intellectual fatigue
bull Survival ValuendashSleep evolved to conserve energy
and protect our ancestors from predators
p154 SLEEP CHART
p150 SUPRACHIASMATIC NUCLEUS
Biological idea
Circadian rhythms Occur every 24hours 1) Sleep-wake cycle 2) Body temp 3) Influenced by changes in routine
Jet lag New work shifts New work shifts
How much do we sleep compared toother species1048697 Giant sloth‐ 20 hoursday1048697 Giant armadillo‐18 hoursday1048697 Arctic ground squirrel‐ 16 hoursday1048697 Cat‐14 hoursday1048697 Gorilla‐12 hoursday1048697 Jaguar‐10 hoursday1048697 Chimp‐9 hoursday1048697 Human rabbit pig‐8 hoursday1048697 Gray seal‐6 hoursday1048697 Cow goat elephant‐3 hoursday1048697 Horse zebra‐2 hoursday
Theories of Sleepbull RepairRestoration
ndashSleep allows for recuperation from physical emotional and intellectual fatigue
bull Survival ValuendashSleep evolved to conserve energy
and protect our ancestors from predators
p150 SUPRACHIASMATIC NUCLEUS
Biological idea
Circadian rhythms Occur every 24hours 1) Sleep-wake cycle 2) Body temp 3) Influenced by changes in routine
Jet lag New work shifts New work shifts
How much do we sleep compared toother species1048697 Giant sloth‐ 20 hoursday1048697 Giant armadillo‐18 hoursday1048697 Arctic ground squirrel‐ 16 hoursday1048697 Cat‐14 hoursday1048697 Gorilla‐12 hoursday1048697 Jaguar‐10 hoursday1048697 Chimp‐9 hoursday1048697 Human rabbit pig‐8 hoursday1048697 Gray seal‐6 hoursday1048697 Cow goat elephant‐3 hoursday1048697 Horse zebra‐2 hoursday
Theories of Sleepbull RepairRestoration
ndashSleep allows for recuperation from physical emotional and intellectual fatigue
bull Survival ValuendashSleep evolved to conserve energy
and protect our ancestors from predators
Biological idea
Circadian rhythms Occur every 24hours 1) Sleep-wake cycle 2) Body temp 3) Influenced by changes in routine
Jet lag New work shifts New work shifts
How much do we sleep compared toother species1048697 Giant sloth‐ 20 hoursday1048697 Giant armadillo‐18 hoursday1048697 Arctic ground squirrel‐ 16 hoursday1048697 Cat‐14 hoursday1048697 Gorilla‐12 hoursday1048697 Jaguar‐10 hoursday1048697 Chimp‐9 hoursday1048697 Human rabbit pig‐8 hoursday1048697 Gray seal‐6 hoursday1048697 Cow goat elephant‐3 hoursday1048697 Horse zebra‐2 hoursday
Theories of Sleepbull RepairRestoration
ndashSleep allows for recuperation from physical emotional and intellectual fatigue
bull Survival ValuendashSleep evolved to conserve energy
and protect our ancestors from predators
How much do we sleep compared toother species1048697 Giant sloth‐ 20 hoursday1048697 Giant armadillo‐18 hoursday1048697 Arctic ground squirrel‐ 16 hoursday1048697 Cat‐14 hoursday1048697 Gorilla‐12 hoursday1048697 Jaguar‐10 hoursday1048697 Chimp‐9 hoursday1048697 Human rabbit pig‐8 hoursday1048697 Gray seal‐6 hoursday1048697 Cow goat elephant‐3 hoursday1048697 Horse zebra‐2 hoursday
Theories of Sleepbull RepairRestoration
ndashSleep allows for recuperation from physical emotional and intellectual fatigue
bull Survival ValuendashSleep evolved to conserve energy
and protect our ancestors from predators
Theories of Sleepbull RepairRestoration
ndashSleep allows for recuperation from physical emotional and intellectual fatigue
bull Survival ValuendashSleep evolved to conserve energy
and protect our ancestors from predators
![957 Alexander Nairne [152x-1869.] John Nashe - …ukgo7.com/england-online/London Marriage Licences/N.pdf · 957 Alexander Nairne [152x-1869.] John Nashe Mairne, Alexan$er, 1665](https://img.dokumen.tips/doc/110x75/5b89a26c7f8b9a78618c49c4/957-alexander-nairne-152x-1869-john-nashe-ukgo7comengland-onlinelondon-marriage.jpg)
