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Verywell Health on MSN1d
The 4 Stages of Sleep: What Happens During Each CycleREM stages and one REM stage. Ideally, you repeatedly cycle through each stage. Learn how long each stage lasts.
You may think your night comprises of a simple sleep/wake cycle, characterized by a sleeping state and a waking state. However, it’s a little more complex. “There are two types of sleep ...
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