https://www.usatoday.com/story/life/health-wellness/2023/03/25/what-rem-sleep-good-deep-sleep-dreams/11527952002/
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3/25/23 at 9:00am
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USA Today
REM (rapid eye movement) sleep is a stage of semi-deep sleep. How much deep sleep do you need? And is it good for you? The experts explain.
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