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 صدى البلد
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2026-09-26T15:27:58.000Z

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Biological clock and sleep regulation

Biological clock and sleep regulation

Dr. Maha Youssef reveals that the body's biological clock, which is located in the brain, controls the timing of many bodily functions and is not just responsible for regulating sleep and wakefulness. It works in an integrated manner to coordinate daily activities, with the body being more active during the day (such as digestion and concentration). Its activity pattern changes after sunset, as performance decreases and the secretion of sleep hormone increases, helping the body to transition into rest and sleep. The biological clock ensures the regularity of vital processes and their alignment with the day-night cycle.

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