Your body runs on a 24 hour internal clock. Cells, hormones, systems timed to the light and dark cycle your biology evolved with over millions of years. Then came artificial light. Late night screens, cortisol and low grade stress that never fully switches off. Blue light at night suppresses melatonin — the hormone your body needs to fall asleep and stay there. A disrupted circadian rhythm doesn't just affect how tired you feel. It affects how your body resets and recovers overnight. The good news is your biology is remarkably responsive. The right inputs, at the right time, can shift things meaningfully. |
