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What are the stages of sleep?

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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

SOURCES:

National Institutes of Health.

National Sleep Foundation.

Reviewed by Sabrina Felson on October 26, 2018

SOURCES:

National Institutes of Health.

National Sleep Foundation.

Reviewed by Sabrina Felson on October 26, 2018

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What are the stages of REM sleep?

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