A circadian rhythm is a 24-hour cycle dictated by the body's internal clock, which is controlled by several physiological mechanisms. Most plants and animals have a circadian rhythm, and in humans it ...

A circadian rhythm is a natural process that regulates your body's sleep and wake patterns, among other key functions. It's often described as an internal clock that operates on a roughly 24-hour ...

Circadian rhythms are cycles in the body that occur roughly across 24 hours. In humans, circadian rhythms cause physical and mental changes in the body, including feelings of wakefulness and sleep.

How often do you check to see what time it is? Clocks—on our phones, watches and throughout the house—help guide our routines. They tell us when we should get up, when it’s time for bed, if our ...

A junctional escape rhythm is when the heartbeat starts in a different part of the heart than it should. This type of arrhythmia may not need treatment, but a doctor does need to investigate the ...

If your mental health has been declining, your sleep-wake cycle may be to blame, according to a new review of literature. Taylor Leamey wrote about all things wellness for CNET, specializing in mental ...