What is the effect of circadian rhythms on human health?

Daily biorhythm is the most important biological rhythm of a person. The daily rhythm is associated with one revolution of the Earth around its axis and lasts about 24 hours (sunny day). At the same time, illumination, temperature, atmospheric humidity, electric and magnetic fields of the Earth, and even the intensity of the flow of solar particles regularly change during the day. A person has discovered more than 300 rhythm-manifesting functions that are strictly repeated throughout the day and are consistent with each other. They correspond to the cyclic processes of energy consumption and recovery. Human performance during the day varies in accordance with daily biological rhythms and has two peaks: from 10 to 12 hours and from 16 to 18 hours. At night, performance decreases, especially from 1 am to 5 am. The main daily cycle, base and background of the flow of all other rhythms is the alternation of sleep and wakefulness.
One of the reasons for the daily biorhythm is the protection of nerve cells of the central nervous system from depletion by periodic sleep, accompanied by protective inhibition.
Body temperature rises regularly in the evening and drops several hours before morning awakening, in the morning the secretion of the stress hormone cortisone is 10-20 times higher than at night.
Urge to urinate and bowel function are usually suppressed at night and resume in the morning.

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