The Morning Habit That Reprograms Your Sleep
8 Oct 2025 · 1 min

0:36
YouTube video (by Darrian Peck) arguing that morning exposure to natural sunlight within the first hour after waking is a primary cue for the circadian clock. The speaker explains that morning light suppresses melatonin and triggers cortisol production, setting daytime alertness and leading to melatonin production 12–16 hours later to enable sleep.










