Walker: Waking two hours early can cost up to 70% of REM sleep
Dr. Matt Walker · #131 Matthew Walker: The Power of Sleep · Feb 22, 2022 · at 6:44
Neuroscientist Dr. Matt Walker illustrates how cutting sleep short disproportionately eliminates REM sleep.
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“You may have lost 25% of your total sleep, but you may have lost 50, 60, even 70% of all of your rapid eye movement sleep. Because rapid eye movement sleep comes in those last couple of hours of the night.”
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