A walk through the stages of sleep

4:47

Sleep scientist Matt Walker breaks down the difference between REM (Rapid-Eye Movement) and non-REM sleep, what occurs during each stage of sleep — and why it's important to get enough of both.

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A walk through the stages of sleep

Sleep scientist Matt Walker breaks down the difference between REM (Rapid-Eye Movement) and non-REM sleep, what occurs during each stage of sleep — and why it's important to get enough of both.