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AKA adaptive theory of sleep

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The evolutionary theory of sleep was made by Nathaniel Kleitman (an American Physiologist)

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the theory that as well as sleeping for conservation of energy, all species have adapted to sleep when it is unsafe to be awake.

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The idea that we sleep to restore and repair energy used throughout the day to get it ready for the next day.

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People sleep in order to process information.

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Essential for revitalizing and restoring the physiological process that keep the body and mind healthy and properly functioning. To support this theory provided by 2011 research that shoed TEM sleep increase periods of sleep deprivation and strenuous physical activity. Body increases its rate of cell division and protein synthesis, further suggesting that repaid and restoration occur during sleeping periods.

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Essential for revitalizing and restoring the physiological process that keep the body and mind healthy and properly functioning. To support this theory provided by 2011 research that shoed TEM sleep increase periods of sleep deprivation and strenuous physical activity. Body increases its rate of cell division and protein synthesis, further suggesting that repaid and restoration occur during sleeping periods.

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Studies demonstrate that lack of sleep seriously impacts the ability to recall and remember information.

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If I did not get enough sleep I would have an impaired ability of recalling and remembering.

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This theory is related to both REM and NREM sleep, as explicit memories are consolidated in non rem and implicit are memories are consolidated in REM.

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The more sleep we prioritise, the more likely the
brain will embed information process for lessons or lectures that same day

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The theory that sleep allows for the brain to rid itself of toxins and waste products produced throughout the day, resulting in the brain functioning more efficiently.

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If someone didn’t get enough sleep, there would be a build-up of toxins in their brain. As there wouldn’t be the free flow of fluids to clear these out. Or it may be done partway through which would make you wake up feeling groggy and unrested. 

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If someone didn’t get enough sleep, there would be a build-up of toxins in their brain. As there wouldn’t be the free flow of fluids to clear these out. Or it may be done partway through which would make you wake up feeling groggy and unrested. 

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It has been found that CFS flows more efficiently while in non-rem sleep (NREM), due to the slower brain waves. 

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It has been found that CFS flows more efficiently while in non-rem sleep (NREM), due to the slower brain waves. 

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it suggests that sleep allows the brain to clean itself up. The October 2013 mouse study found that the brain cleans itself of toxins and waste produced during the day while asleep

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This relates to REM or NREM sleep as during rem we are in a state of near wakefulness, this could have developed as a defense against predators.

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Animals that have few predators, such as lions and bears, often sleep between 12-15 hours each day. Contrastingly, animals that have many predators only have short periods of sleep, generally getting no more than 4-5 hours of sleep each day.

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Based off the evolutionary theory, it is assumed that acquiring too much sleep results in putting yourself in danger, whether that be from predators or other natural causes.

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Different mammals spend different amounts of time in non-REM sleep and REM sleep

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All mammals studied thus far do exhibit signs of REM sleep, suggesting that mammals dream, just like humans do

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We sleep in order to restore and revitalise the physiological processes that allow our body and mind to carry out its functions.

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A study conducted on a mouse In October 2013 found that the brain cleaned toxins and waste products during the day whilst asleep.

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Decreased cell division and protein synthesis could have lasting effects on bodily functions, metabolic rate, impaired immunity, etc. Too little sleep could also result in heart attack, diabetes, stroke, increased blood pressure and/or obesity.

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The brain will still contain the toxins and waste that was built up throughout the day as there wasn’t enough sleep taken.