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Why We Sleep: Unlocking the Power of Sleep and Dreams Hardcover – 3 October 2017

4.7 out of 5 stars 3,313 ratings

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"Fascinating ... Walker describes how our resting habits have changed throughout history; the connection between sleep, chronic disease, and life span; and why the pills and aids we use to sleep longer and deeper are actually making our nights worse. Most important, he gives us simple, actionable ways to get better rest--tonight."
--Men's Journal

"The director of UC Berkeley's Sleep and Neuroimaging Lab explores the purpose of slumber. Understanding the 'why, ' it turns out, just might help you with the 'how to.'"
--People

"This is a stimulating and important book which you should read in the knowledge that the author is, as he puts it, 'in love with everything that sleep is and does.' But please do not begin it just before bedtime."
--Financial Times

"A thoughtful tour through the still dimly understood state of being asleep ... Why We Sleep is a book on a mission. Walker is in love with sleep and wants us to fall in love with sleep, too. And it is urgent. He makes the argument, persuasively, that we are in the midst of a 'silent sleep loss epidemic' that poses 'the greatest public health challenge we face in the 21st century' ... Why We Sleep mounts a persuasive, exuberant case for addressing our societal sleep deficit and for the virtues of sleep itself. It is recommended for night-table reading in the most pragmatic sense."
--New York Times Book Review

"A neuroscientist has found a revolutionary way of being cleverer, more attractive, slimmer, happier, healthier and of warding off cancer -- a good night's shut-eye ... It's probably a little too soon to tell you that Why We Sleep saved my life, but I can tell you that it's been an eye-opener."
--The Guardian

"Why We Sleep is simply a must-read. World-renowned neuroscientist and sleep expert Matthew Walker takes us on a fascinating and indispensable journey into the latest understandings of the science of sleep. And the book goes way beyond satisfying intellectual curiosity, as it explores the cognitive, health, safety and business consequences of compromising the quality and quantity of our sleep; insights that may change the way you live your life. In these super-charged, distracting times it is hard to think of a book that is more important to read than this one."
--Adam Gazzaley, co-author of The Distracted Mind, founder and executive director of Neuroscape, and Professor of Neurology, Physiology, and Psychiatry at University of California, San Francisco

"Most of us have no idea what we do with a third of our lives. In this lucid and engaging book, Matt Walker explains the new science that is rapidly solving this age-old mystery. Why We Sleep is a canny pleasure that will have you turning pages well past your bedtime."
--Daniel Gilbert, professor of psychology at Harvard and author of Stumbling on Happiness

"In Why We Sleep, Dr. Matt Walker brilliantly illuminates the night, explaining how sleep can make us healthier, safer, smarter, and more productive. Clearly and definitively, he provides knowledge and strategies to overcome the life-threatening risks associated with our sleep-deprived society. Our universal need for sleep ensures that every reader will find value in Dr. Walker's insightful counsel."
--Mark R. Rosekind, Ph.D., former NHTSA Administrator, NTSB member, and NASA scientist

"Walker is a scientist but writes for the layperson, illustrating tricky concepts with easily grasped analogies. Of particular interest to business owners, educators, parents, and government officials, and anyone who has ever suffered from a poor night's sleep."
--Library Journal, starred review

About the Author

Matthew Walker is a professor of neuroscience and psychology at UC Berkeley, the Director of its Sleep and Neuroimaging Lab, 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. Why We Sleep is his first book.

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4.7 out of 5 stars
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Top international reviews

Anna
3.0 out of 5 stars Not helpful for insomniacs!
Reviewed in the United Kingdom on 8 September 2018
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217 people found this helpful
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jlama
5.0 out of 5 stars An essential book
Reviewed in the United Kingdom on 21 May 2018
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110 people found this helpful
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R. M. M.
3.0 out of 5 stars Don't bother unless you're a doctor
Reviewed in the United Kingdom on 4 November 2018
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73 people found this helpful
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Debbie Young
5.0 out of 5 stars Everyone should read this book
Reviewed in the United Kingdom on 4 June 2018
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Ella Guru
1.0 out of 5 stars Cod psychology
Reviewed in the United Kingdom on 29 December 2018
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56 people found this helpful
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Islander
5.0 out of 5 stars A game-changing view that clearly explains the importance of good, regular sleep.
Reviewed in the United Kingdom on 24 May 2018
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Carnivore
2.0 out of 5 stars disappointing
Reviewed in the United States on 9 October 2018
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680 people found this helpful
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Abhishek Debnath
5.0 out of 5 stars Trust Me, Don't Mess With Sleep
Reviewed in India on 7 August 2019
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kilara
5.0 out of 5 stars I can’t rate this book highly enough. As a ...
Reviewed in the United Kingdom on 23 June 2018
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Gonçalo
5.0 out of 5 stars Made me understand the impact of sleep in learning
Reviewed in the United Kingdom on 20 April 2018
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27 people found this helpful
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Bharath Ramakrishnan
5.0 out of 5 stars Very important reading
Reviewed in India on 29 October 2018
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43 people found this helpful
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J. Haddick
5.0 out of 5 stars If you don’t snooze, you lose
Reviewed in Germany on 14 March 2018
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Antoine
2.0 out of 5 stars Important subject but poorly written
Reviewed in the United Kingdom on 18 February 2019
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E P Bharucha
5.0 out of 5 stars Sleep - What lack of it does to you
Reviewed in India on 4 August 2018
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PurpleBoots
5.0 out of 5 stars Enlightening
Reviewed in the United Kingdom on 18 October 2018
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