Individual Circadian Clocks Might Be the Next Frontier of Personalized Medicine

https://time.com/5876614/circadian-rhythm-study/

For as long as Seemay Chou can remember, she has gone to bed at midnight and woken around 4:30 a.m. Chou long assumed that meant she was a bad sleeper. Not that she felt bad. In fact, sleeping just four hours a night left her feeling full of energy and with free time to get more done at her job leading a research lab that studies bacteria.

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