Why We Sleep: Unlocking the Power of Sleep and Dreams

The first sleep book by a leading scientific expert-Professor Matthew Walker, Director of UC Berkeley's Sleep and Neuroimaging Lab-reveals his groundbreaking exploration of sleep, explaining how we can harness its transformative power to change our lives for the better.

Sleep is one of the most important but least understood aspects of our life, wellness, and longevity. Until very recently, science had no answer to the question of why we sleep, or what good it served, or why we suffer such devastating health consequences when we don't sleep. Compared to the other basic drives in life-eating, drinking, and reproducing-the purpose of sleep remained elusive.

But an explosion of scientific discoveries in the last twenty years has shed new light on this fundamental aspect of our lives. Now, preeminent neuroscientist and sleep expert Matthew Walker gives us a new understanding of the vital importance of sleep and dreaming. Among so many other things, within the brain, sleep enriches our ability to learn, memorize, and make logical decisions. It recalibrates our emotions, restocks our immune system, fine-tunes our metabolism, and regulates our appetite. Dreaming mollifies painful memories and creates a virtual reality space in which the brain melds past and present knowledge to inspire creativity.

Walker answers important questions about sleep: how do caffeine and alcohol affect sleep? What really happens during REM sleep? Why do our sleep patterns change across a lifetime? How do common sleep aids affect us and can they do long-term damage? Charting cutting-edge scientific breakthroughs, and synthesizing decades of research and clinical practice, Walker explains how we can harness sleep to improve learning, mood, and energy levels; regulate hormones; prevent cancer, Alzheimer's, and diabetes; slow the effects of aging; increase longevity; enhance the education and lifespan of our children, and boost the efficiency, success, and productivity of our businesses. Clear-eyed, fascinating, and immensely accessible, Why We Sleep is the crucial account on sleep that will forever change listeners' minds on the subject.

Matthew Walker is a professor of neuroscience and psychology at the University of California-Berkeley, the director of its sleep and neuroimaging laboratory, and a former professor of psychiatry at Harvard University. He has published over 100 scientific studies and has appeared on 60 Minutes, Nova, BBC News, and NPR's Science Friday.Steve West, the winner of multiple Earphones Awards for narration, is an international actor who has starred on London's prestigious West End stage, including productions of Mamma Mia! and Oh, What a Night! He is widely known for his television and film work in both the United States and the UK, and he has performed for Queen Elizabeth II at Buckingham Palace. He hosts his own television show for the UK live from Los Angeles.

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