The Lost Art of Biphasic Sleep: How Our Ancestors Slept Twice a Night "The 8-hour sleep rule is a modern myth. Discover the history of biphasic sleep, a two-phase pattern that was the norm before the Industrial Revolution."

You're Thinking About Sleep All Wrong: Deconstructing the Myth of the 8-Hour Rule

#BiphasicSleep #SegmentedSleep #SleepHistory #8HourMyth #CircadianRhythm #FactRage #FactRageNews

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Apple Health graph showing three sleep segments

This is a typical night's sleep for me, segmented into three periods. It defies sleep surveys that ask what time I wake up most mornings. #segmentedsleep