The simple act of stepping outside in the morning may be one of the most powerful health interventions you can make. In The Power of Morning Light, science writer Priya Anand Rao separates fact from fad, revealing how morning sunlight resets your circadian rhythm, boosts alertness, and supports deep sleep. She explains why timing and duration matter far more than you might expect, and offers clear, achievable guidelines—without suggesting you stare at the sun or abandon sunscreen. This book covers the full spectrum of light health: from the science of retinal cells that govern your internal clock, to the role of midday sun for vitamin D, to the careful management of artificial light after dusk. Practical and reassuring, it helps you build a sustainable morning light habit that fits your life and latitude. Whether you are an early riser or a night owl, this book invites you to reclaim a lost resource: the natural light of dawn. Part of The Sagewell Wellness Library.