How does a sleep tracker on your finger compare to one in a bed? I tested Sleep Number and Oura for a month to find out. Plus, expert sleep-tracking tips. Aly Lopez Former Writer I Aly Lopez was a ...
How does your brain know when it's time to sleep? There are two main factors: Hours Awake. The longer you've been awake, the stronger your drive for sleep. Circadian Rhythm. Your body operates on a ...
Blumberg is a contributor for TIME. Blumberg is a contributor for TIME. Even though we spend roughly a third of our lives doing it, sleep doesn’t always come easily. More than one in three adults in ...
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