THE CIRCADIAN RHYTHM: When do you peak?

Circadian rhythm is our daily clock-when we wake and when we sleep, but also includes frequency of eating and drinking, body temperature, blood pressure, release of certain hormones, and even sensitivity to certain medications. The typical adult human cycle is about 24 hours. Starting in the morning, our lowest body temperature is around 4:30 a.m., and peaks around 7 p.m. We are highly alert around 10 a.m., our best coordination is mid-afternoon around 2:30 p.m., followed by peak reaction time at 3:30 p.m. and, here’s an important one for athletes—greatest cardiovascular and muscle strength is around 5 p.m.


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