Circadian rhythm infographic poster. Melatonin and cortisol are produced in human brain. Colorful diagram of circadian cycle. Night day life balance. Sleep wake cycle chart flat vector illustration. premium vector by Pikovit

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vector graphic illustration day human sun morning health life healthcare time clock icon night sleep biological balance hour cycle noon daily routine mental Anxiety graph chart schedule midnight afternoon rhythm brain diagram wake stages nocturnal regulation awake phase maximum awakening hormone rem hormonal cortisol serotonin infographic melatonin circadian chronobiology wake cycle

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