Circadian rhythm vector illustration. Labeled educational day cycle scheme. Daily human body inner regulation schedule. Natural sleep-wake biological process explanation and chronobiology infographic. premium vector by VectorMine

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vector illustration day human model morning health natural time clock structure night sleep biological organic body frequency hour cycle noon daily alarm mental process schedule scientific midnight rhythm scheme educational internal brain diagram regulator nocturnal regulation oscillation fatigue labeled secretion infographic repeatedly epiphysis melatonin melatonine circadian endogenous chronobiology chronotype

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