FOAMNIGHTS

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The Science of Sleep

What happens while you sleep — REM and deep sleep, the circadian clock, melatonin, dreams, and the biology of rest.

Sleep

Sleep

Rapid eye movement sleep

Rapid eye movement sleep

Non-rapid eye movement sleep

Non-rapid eye movement sleep

Sleep cycle

Sleep cycle

Slow-wave sleep

Slow-wave sleep

Circadian rhythm

Circadian rhythm

Melatonin

Melatonin

Dream

Dream

Nap

Nap

Adenosine

Adenosine

Suprachiasmatic nucleus

Suprachiasmatic nucleus

Polysomnography

Polysomnography

Electroencephalography

Electroencephalography

Sleep deprivation

Sleep deprivation