umans spend about a third of their entire lives asleep, but scientists still aren’t entirely sure why. The human body is governed by a 24-hour sleep-wake cycle known as circadian rhythm. This internal clock coordinates the body’s physical and mental systems as the body transitions from alertness to sleep. It does this by responding to the changes in natural light in your environment. As natural light dims
WHY DO WE SLEEP?
Feb 16, 2023
2 minutes
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