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Healthy sleep consists of distinct stages. We break down the defining traits of each stage and how they differ from one another.
Four Stages of Sleep - Amerisleep
Stages of Sleep: What Happens in a Sleep Cycle
Medical Corner : The biology behind sleep – ZAAHARA
Healthy Sleep: Why You Need Sleep, How Much You Need, and How to Get More
Deep sleep: how to make the most of your sleep cycle
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Stages of Sleep: What Happens in a Sleep Cycle
Newark Department of Health and Community Wellness
SLEEP CYCLE Diagram