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Biological Clock Entrainment

Meaning

The precise process of synchronizing the body’s internal circadian rhythm—the endogenous 24-hour cycle of physiological and behavioral processes—with external environmental cues, primarily the light-dark cycle. Proper entrainment is essential for maintaining hormonal balance, optimal sleep architecture, and metabolic health, as nearly all endocrine functions exhibit a robust circadian rhythm. Misalignment, or chronodisruption, is a known contributor to metabolic and mood disorders.