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Circadian Synchronization

Meaning

Circadian synchronization describes the precise alignment of the body’s internal biological clock, governed by the suprachiasmatic nucleus, with external environmental cues like the light-dark cycle. This ensures physiological functions, including sleep-wake cycles, hormone secretion, and metabolism, occur at optimal daily times. The body’s intrinsic rhythm adjusts via external time givers, or zeitgebers, with light being most potent.