What are the stages of sleep?
ANSWER
When you're asleep, you cycle between REM and non-REM sleep.
REM stands for rapid eye movement. During REM sleep, your eyes move quickly in different directions. That doesn't happen during non-REM sleep.
First comes non-REM sleep, followed by a shorter period of REM sleep, and then the cycle starts over again. Dreams typically happen during REM sleep.
From: What Are REM and Non-REM Sleep? WebMD Medical Reference
Reviewed by Sabrina Felson on October 26, 2018
SOURCES:
National Institutes of Health.
National Sleep Foundation.
SOURCES:
National Institutes of Health.
National Sleep Foundation.
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