Circadian rhythms are the cycles that tell the body when to sleep, wake, and eat—the biological and psychological processes that oscillate in predictable patterns each day. This internal clock ...
In this way they regulate an array of biological functions ... this suggests the rhythm was generated by some sort of internal clock instead of an external cue, which would have yielded a ...
It signals the body when it’s time to sleep, supporting our internal “biological clock ... that disrupted melatonin secretion, a key regulator of circadian rhythms, may play a role in ...