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A comment on More sleep or more exercise: the best time trade-offs for children’s health. Parent comment

Re:More sleep or more exercise: the best time trade-offs for... by watwut on Wednesday April 28, 2021 @12:45PM (#26971418)
Somehow, hardwired time to sleep is independent of sunsent and location in timezone. No matter where the sun is at, no matter anything.

In winter, there is dark at like 17:00. How do their bodies know difference between 22:00 and 24:00?

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