Harvard professor calls out ‘lie’ of needing 8 hours of sleep a night, says it’s Industrial Era ‘nonsense’
Most adults do not need a hard eight hours of sleep; a growing body of evidence and evolutionary research suggest the optimal nightly sleep for many healthy adults is closer to seven hours, with health risks rising on either side of that range in a U‑shaped pattern. Harvard evolutionary biologist Daniel E. Lieberman calls the … Read more
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