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Light Calibration

Meaning

Light Calibration is the deliberate, precise adjustment of the timing, intensity, and spectral composition of light exposure throughout the day to optimize an individual’s circadian rhythm and neuroendocrine function. This practice is a powerful, non-pharmacological tool used to synchronize the master biological clock in the brain, which in turn governs the rhythmic secretion of key hormones. Proper light calibration is essential for maintaining robust sleep-wake cycles, optimizing daytime alertness, and supporting the nocturnal release of restorative hormones like melatonin.