Rythme circadien
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<timefyi-glossary slug="circadian-rhythm"></timefyi-glossary>Définition
Le cycle biologique interne d'environ 24 heures qui régule le sommeil, l'éveil et de nombreux processus physiologiques. Les rythmes circadiens sont pilotés par l'exposition lumineuse et se remettent à zéro quotidiennement grâce à des signaux environnementaux.