Most of us spend our days under artificial light, our eyes locked on screens, our cells starved for the one signal evolution designed us to follow: natural daylight. The cost isn't just tiredness — it's a quiet unraveling of mood, energy, and sleep. In The Sunbathing Effect, science writer Nadia Ellery Voss makes a calm, evidence-informed case that something as simple as timed exposure to daylight can meaningfully restore your body's ancient rhythms. You'll learn why morning light is the master switch for alertness, how midday sun shapes your metabolism and mood, and why afternoon dimness prepares you for deep rest. Drawing on consensus from major health organizations, this book offers a gentle, practical framework — no blackout curtains or expensive lamps required. You can start with as little as ten minutes a day. By the final chapter, you'll know exactly how to use daylight to feel human again: more grounded, more energized, more yourself. Part of The Sagewell Wellness Library.