Based on Holmes, your circadian rhythm is the inspiration for all features of your well-being. When your rhythm is out of sync, it creates a ripple impact that throws every part else off—your temper, power, sleep, and even your immune system. So, what’s circadian rhythm precisely? It’s your physique’s pure 24-hour cycle, regulated by exterior cues like mild, that tells you when to sleep, eat, and be lively.