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In this groundbreaking guide to maximizing the restorative and regenerative benefits of light, psychologist Karl Ryberg explains how to use different types of light - sun, fire, and even artificial lighting - in order to create ultimate health and a happy mind.Light. It's all around us. Sometimes soothing and reviving, sometimes glaring and disturbing - light deeply affects us. But can we harness it for our own well-being? Like plants, human bodies need quality light in order to survive, regenerate, and thrive. In this fascinating guide to "eating light" psychologist Karl Ryberg shows you how to best use different types of light to feed your brain and body. Discover how your brain and body absorbs light photons in the form of sunshine, fire, and artificial light.