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Darkness Hygiene

Meaning

Darkness Hygiene is a behavioral and environmental practice focused on minimizing light exposure, especially blue light, during the evening hours to optimize the body’s natural circadian rhythm and hormonal production cycles. This practice is essential for robust hormonal health, as it directly supports the nocturnal secretion of melatonin, a critical neurohormone. Maintaining proper darkness hygiene helps synchronize the master clock in the suprachiasmatic nucleus (SCN) with the external environment, promoting restorative sleep and metabolic regularity.