The Circadian Reset: How Morning Light and Evening Dark Reprogram Your Energy, Mood, and Focus
Your internal clock runs on a 24.18-hour day — slightly longer than the planet's — and every morning you either reset it with light or let it drift. This is the full treatment: the science of the master clock, why morning sunlight and evening darkness steer your energy and mood more reliably than any supplement, the six mistakes that keep your clock broken, and a 7-day circadian reset protocol.