Early birds may be more active, but night owls can catch up
https://www.health.harvard.edu/blog/early-birds-may-be-more-active-but-night-owls-can-catch-up-2020110621261
WebDec 18, 2020 · Early birds, or those who tend to wake early and go to bed early, are people who naturally feel sleepy earlier in the evening and naturally wake early in the morning. For an early bird type, a 9 pm bedtime may be the norm, and rising at 5 am without an alarm clock feels relatively effortless.
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