Translated version
Circadian rhythm
An internal biological ~24-hour cycle that regulates the sleep-wake cycle, hormone secretion, and body temperature. For example, cortisol levels are naturally highest in the morning (helping you wake up), and melatonin levels are highest at night (promoting sleep).
Original version
Cirkadinis ritmas
Vidinis biologinis ~24 valandų ciklas, reguliuojantis miego-būdravimo ciklą, hormonų sekreciją, kūno temperatūrą. Pavyzdžiui, kortizolio lygis natūraliai yra aukščiausias ryte (padeda pabusti), o melatonino – naktį (skatina miegą).
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