Modern life has dimmed our connection to the most fundamental source of vitality: natural daylight. In The Light Therapy Effect, veteran wellness writer Julian Foss Reyner synthesizes decades of circadian science and practical wisdom to show you how deliberate daily light exposure can restore your sleep, sharpen your mood, and rekindle your energy. You will learn why morning sunlight is your body's most powerful timekeeper, how to strategically use midday brightness to combat afternoon slumps, and when to dim your surroundings for deep, restorative sleep. This book dispels common myths about blue light and provides clear, sensible guidance for everyone—from desk workers in windowless offices to frequent travelers struggling with jet lag. Reyner also addresses seasonal affective shifts, the role of light in aging and eye health, and simple ways to redesign your home and workplace for better circadian alignment. Grounded in mainstream medical consensus and always reminding readers that this is educational, not prescriptive, The Light Therapy Effect offers a science-based path back to feeling fully human. Part of The Sagewell Wellness Library.