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Light Exposure Timing

Meaning

Light Exposure Timing is the strategic regulation of the intensity, spectrum, and duration of light exposure throughout the 24-hour cycle to precisely entrain the body’s master circadian clock. This clinical intervention utilizes light as a potent chronobiotic agent to synchronize internal biological rhythms with the external environment. Optimal timing, particularly bright light exposure shortly after waking and minimizing blue light exposure pre-sleep, is crucial for regulating the sleep-wake cycle and downstream hormonal secretion.