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| website = [https://www.simonandschuster.com/books/Why-We-Sleep/Matthew-Walker/9781501144318 simonandschuster.com]
| website = [https://www.simonandschuster.com/books/Why-We-Sleep/Matthew-Walker/9781501144318 simonandschuster.com]
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'''''Why We Sleep by Matthew Walker''''' is a popular-science book about the neuroscience and physiology of sleep, first published in the United States by Scribner on 3 October 2017 (368 pages; ISBN 978-1-5011-4431-8).<ref name="S&S9781501144318" /><ref name="OCLC975365716" /> Written by neuroscientist Matthew P. Walker, a professor at the University of California, Berkeley, the book synthesizes laboratory, clinical, and epidemiological findings on how sleep and circadian biology shape learning, memory, emotion, immunity, metabolism, and long-term health.<ref name="UCBProfile">{{cite web |title=Matthew P. Walker |url=https://psychology.berkeley.edu/people/matthew-p-walker |website=UC Berkeley Department of Psychology |publisher=University of California, Berkeley |access-date=19 October 2025}}</ref><ref name="S&S9781501144318" /> It explains NREM/REM sleep and circadian rhythms, describes the consequences of insufficient sleep, and discusses practical topics such as caffeine, jet lag, melatonin, sleep disorders, and when behavioral therapy is preferable to sleeping pills.<ref name="S&S9781501144318" /><ref name="UCB2017">{{cite web |title=Everything you need to know about sleep, but are too tired to ask |url=https://news.berkeley.edu/2017/10/17/whywesleep/ |website=UC Berkeley News |publisher=University of California, Berkeley |date=17 October 2017 |access-date=19 October 2025 |last=Anwar |first=Yasmin}}</ref> The book is arranged in four parts—on what sleep is, why it matters, how and why we dream, and how society might change—presented in clear prose for general readers.<ref name="OCLC1001968546">{{cite web |title=Why we sleep : unlocking the power of sleep and dreams (table of contents) |url=https://search.worldcat.org/ja/title/why-we-sleep-unlocking-the-power-of-sleep-and-dreams/oclc/1001968546 |website=WorldCat |publisher=OCLC |access-date=19 October 2025}}</ref><ref name="Kirkus2017">{{cite web |title=Why We Sleep |url=https://www.kirkusreviews.com/book-reviews/matthew-walker/why-we-sleep/ |website=Kirkus Reviews |access-date=19 October 2025}}</ref> According to the publisher, it is a New York Times bestseller and an international sensation; it was named one of Publishers Weekly’s Best Books of 2017, and The Sunday Times’ year-end list recorded 162,125 UK copies sold in 2018.<ref name="S&S9781501144318" /><ref name="PWBest2017">{{cite web |title=Best Books 2017 |url=https://best-books.publishersweekly.com/pw/best-books/2017 |website=Publishers Weekly |access-date=19 October 2025}}</ref><ref name="STimes2018">{{cite news |title=Books: The Sunday Times Bestsellers of the Year, 2018 |url=https://www.thetimes.com/culture/books/article/books-the-sunday-times-bestsellers-of-the-year-2018-k9wn67tw6 |work=The Sunday Times |date=30 December 2018 |access-date=19 October 2025}}</ref>


== Chapter summary ==
== Chapter summary ==
Line 63: Line 65:


🔭 '''16 – A New Vision for Sleep in the Twenty-First Century.'''
🔭 '''16 – A New Vision for Sleep in the Twenty-First Century.'''

== Background & reception ==

🖋️ '''Author & writing'''. Matthew P. Walker is Professor of Neuroscience and Psychology at the University of California, Berkeley, and founder/director of the Center for Human Sleep Science; his academic work focuses on sleep’s role in memory, emotion, and health.<ref name="UCBProfile" /> His laboratory studies use EEG and MRI among other methods to examine how sleep loss affects cognition and physiology, an approach that underpins the book’s explanations and case studies.<ref name="WalkerLab">{{cite web |title=Sleep and Neuroimaging Lab — Research focus |url=https://walkerlab.berkeley.edu/science.html |website=Center for Human Sleep Science, UC Berkeley |publisher=University of California, Berkeley |access-date=19 October 2025}}</ref> The book aims to translate this body of evidence for general readers and to reframe insufficient sleep as a major public-health problem.<ref name="UCB2017" /> Its four-part structure (sleep mechanisms; why sleep matters; dreaming; and society) mirrors that goal of combining physiology with practical guidance.<ref name="OCLC1001968546" /><ref name="S&S9781501144318" />

📈 '''Commercial reception'''. The publisher reports that ''Why We Sleep'' is a New York Times bestseller and an international sensation.<ref name="S&S9781501144318" /> In the UK, ''The Sunday Times'' listed it among the year’s bestsellers in 2018 with 162,125 copies sold.<ref name="STimes2018" /> In the trade press, it was selected as one of ''Publishers Weekly''’s Best Books of 2017.<ref name="PWBest2017" />

👍 '''Praise'''. Mark O’Connell in ''The Guardian'' welcomed the book’s urgent message about sleep’s centrality to health and education and described it as “an eye-opener.”<ref name="Guardian2017">{{cite news |title=Why We Sleep by Matthew Walker review – how more sleep can save your life |url=https://www.theguardian.com/books/2017/sep/21/why-we-sleep-by-matthew-walker-review |work=The Guardian |date=21 September 2017 |access-date=19 October 2025 |last=O'Connell |first=Mark}}</ref> Clive Cookson in the ''Financial Times'' called it “stimulating and important,” summarising evidence linking sleep to cognition and disease.<ref name="FT2017">{{cite news |title=Why We Sleep by Matthew Walker — for a longer life, press snooze |url=https://www.ft.com/content/e9dc72b2-a535-11e7-9e4f-7f5e6a7c98a2 |work=Financial Times |date=3 October 2017 |access-date=19 October 2025 |last=Cookson |first=Clive}}</ref> ''Kirkus Reviews'' highlighted its accessible treatment of REM/NREM, memory, and the health benefits of sleep for a general audience.<ref name="Kirkus2017" /> ''Times Higher Education'' also praised its account of how circadian disruption and modern habits damage health, noting the book’s timely urgency.<ref>{{cite news |title=Review: Why We Sleep, by Matthew Walker |url=https://www.timeshighereducation.com/books/review-why-we-sleep-matthew-walker-allen-lane |work=Times Higher Education |date=5 October 2017 |access-date=19 October 2025}}</ref>

👎 '''Criticism'''. Zoë Heller in ''The New Yorker'' questioned some extrapolations and aspects of dream interpretation, arguing that parts of the book overreach what current methods can verify.<ref name="NewYorker2018">{{cite news |title=Why We Sleep, and Why We Often Can’t |url=https://www.newyorker.com/magazine/2018/12/10/why-we-sleep-and-why-we-often-cant |work=The New Yorker |date=10 December 2018 |access-date=19 October 2025 |last=Heller |first=Zoë}}</ref> The ''Financial Times'' review noted that some experts dispute claims about a broad decline in average sleep duration, signalling disagreement within the field.<ref name="FT2017" /> In an academic review in ''Organization Studies'', Anu Valtonen critiqued the book’s neuroscientific framing and raised concerns about speculative leaps and neglected social contexts of sleep.<ref>{{cite journal |last=Valtonen |first=Anu |date=20 February 2019 |title=The new science of sleep and dreams (Book review: Why We Sleep) |journal=Organization Studies |doi=10.1177/0170840619831946 |url=https://journals.sagepub.com/doi/10.1177/0170840619831946 |access-date=19 October 2025}}</ref> Columbia University statistician Andrew Gelman also discussed alleged factual and statistical problems raised by critics, urging caution about headline claims.<ref name="Gelman2019">{{cite web |title=Is Matthew Walker’s “Why We Sleep” Riddled with Scientific and Factual Errors? |url=https://statmodeling.stat.columbia.edu/2019/11/18/is-matthew-walkers-why-we-sleep-riddled-with-scientific-and-factual-errors/ |website=Statistical Modeling, Causal Inference, and Social Science |publisher=Columbia University |date=18 November 2019 |access-date=19 October 2025 |last=Gelman |first=Andrew}}</ref>

🌍 '''Impact & adoption'''. Walker promoted the book’s themes in mainstream media, including an interview on NPR’s ''Fresh Air'' on 16 October 2017.<ref>{{cite web |title=Sleep Scientist Warns Against Walking Through Life ‘In An Underslept State’ |url=https://www.freshair.com/topics/health-medicine/sleep |website=Fresh Air Archive |publisher=WHYY/NPR |date=16 October 2017 |access-date=19 October 2025}}</ref> He discussed practical sleep hygiene on ''CBS This Morning'' the same week.<ref>{{cite news |title=The health costs of losing sleep and tips for getting a good night’s rest |url=https://www.cbsnews.com/news/lack-of-sleep-health-effects-and-tips-for-good-nights-rest/ |work=CBS News |date=11 October 2017 |access-date=19 October 2025}}</ref> In April 2019 his TED talk, “Sleep is your superpower,” further amplified the message to a global audience, followed by TED’s ''Sleeping with Science'' series that extended the book’s ideas for the public.<ref name="TED2019">{{cite web |title=Matt Walker: Sleep is your superpower |url=https://www.ted.com/talks/matt_walker_sleep_is_your_superpower |website=TED.com |date=2019 |access-date=19 October 2025}}</ref><ref name="TEDSeries2020">{{cite web |title=Sleeping with Science |url=https://www.ted.com/series/sleeping_with_science |website=TED.com |access-date=19 October 2025}}</ref>


== Related content & more ==
== Related content & more ==

Revision as of 14:31, 19 October 2025

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Why We Sleep by Matthew Walker is a popular-science book about the neuroscience and physiology of sleep, first published in the United States by Scribner on 3 October 2017 (368 pages; ISBN 978-1-5011-4431-8).[1][2] Written by neuroscientist Matthew P. Walker, a professor at the University of California, Berkeley, the book synthesizes laboratory, clinical, and epidemiological findings on how sleep and circadian biology shape learning, memory, emotion, immunity, metabolism, and long-term health.[3][1] It explains NREM/REM sleep and circadian rhythms, describes the consequences of insufficient sleep, and discusses practical topics such as caffeine, jet lag, melatonin, sleep disorders, and when behavioral therapy is preferable to sleeping pills.[1][4] The book is arranged in four parts—on what sleep is, why it matters, how and why we dream, and how society might change—presented in clear prose for general readers.[5][6] According to the publisher, it is a New York Times bestseller and an international sensation; it was named one of Publishers Weekly’s Best Books of 2017, and The Sunday Times’ year-end list recorded 162,125 UK copies sold in 2018.[1][7][8]

Chapter summary

This outline follows the Scribner hardcover first edition (3 October 2017; ISBN 978-1-5011-4431-8).[1][2]

I – This Thing Called Sleep

😴 1 – To Sleep….

☕ 2 – Caffeine, Jet Lag, and Melatonin: Losing and Gaining Control of Your Sleep Rhythm.

⏳ 3 – Defining and Generating Sleep: Time Dilation and What We Learned from a Baby in 1952.

🦍 4 – Ape Beds, Dinosaurs, and Napping with Half a Brain: Who Sleeps, How Do We Sleep, and How Much?.

👶 5 – Changes in Sleep Across the Life Span.

II – Why Should You Sleep?

🧠 6 – Your Mother and Shakespeare Knew: The Benefits of Sleep for the Brain.

🏆 7 – Too Extreme for the Guinness Book of World Records: Sleep Deprivation and the Brain.

❤️ 8 – Cancer, Heart Attacks, and a Shorter Life: Sleep Deprivation and the Body.

III – How and Why We Dream

🌙 9 – Routinely Psychotic: REM-Sleep Dreaming.

🛋️ 10 – Dreaming as Overnight Therapy.

🎨 11 – Dream Creativity and Dream Control.

IV – From Sleeping Pills to Society Transformed

👻 12 – Things That Go Bump in the Night: Sleep Disorders and Death Caused by No Sleep.

📱 13 – iPads, Factory Whistles, and Nightcaps: What’s Stopping You from Sleeping?.

💊 14 – Hurting and Helping Your Sleep: Pills vs. Therapy.

🏛️ 15 – Sleep and Society: What Medicine and Education Are Doing Wrong; What Google and NASA Are Doing Right.

🔭 16 – A New Vision for Sleep in the Twenty-First Century.

Background & reception

🖋️ Author & writing. Matthew P. Walker is Professor of Neuroscience and Psychology at the University of California, Berkeley, and founder/director of the Center for Human Sleep Science; his academic work focuses on sleep’s role in memory, emotion, and health.[3] His laboratory studies use EEG and MRI among other methods to examine how sleep loss affects cognition and physiology, an approach that underpins the book’s explanations and case studies.[9] The book aims to translate this body of evidence for general readers and to reframe insufficient sleep as a major public-health problem.[4] Its four-part structure (sleep mechanisms; why sleep matters; dreaming; and society) mirrors that goal of combining physiology with practical guidance.[5][1]

📈 Commercial reception. The publisher reports that Why We Sleep is a New York Times bestseller and an international sensation.[1] In the UK, The Sunday Times listed it among the year’s bestsellers in 2018 with 162,125 copies sold.[8] In the trade press, it was selected as one of Publishers Weekly’s Best Books of 2017.[7]

👍 Praise. Mark O’Connell in The Guardian welcomed the book’s urgent message about sleep’s centrality to health and education and described it as “an eye-opener.”[10] Clive Cookson in the Financial Times called it “stimulating and important,” summarising evidence linking sleep to cognition and disease.[11] Kirkus Reviews highlighted its accessible treatment of REM/NREM, memory, and the health benefits of sleep for a general audience.[6] Times Higher Education also praised its account of how circadian disruption and modern habits damage health, noting the book’s timely urgency.[12]

👎 Criticism. Zoë Heller in The New Yorker questioned some extrapolations and aspects of dream interpretation, arguing that parts of the book overreach what current methods can verify.[13] The Financial Times review noted that some experts dispute claims about a broad decline in average sleep duration, signalling disagreement within the field.[11] In an academic review in Organization Studies, Anu Valtonen critiqued the book’s neuroscientific framing and raised concerns about speculative leaps and neglected social contexts of sleep.[14] Columbia University statistician Andrew Gelman also discussed alleged factual and statistical problems raised by critics, urging caution about headline claims.[15]

🌍 Impact & adoption. Walker promoted the book’s themes in mainstream media, including an interview on NPR’s Fresh Air on 16 October 2017.[16] He discussed practical sleep hygiene on CBS This Morning the same week.[17] In April 2019 his TED talk, “Sleep is your superpower,” further amplified the message to a global audience, followed by TED’s Sleeping with Science series that extended the book’s ideas for the public.[18][19]

Related content & more

YouTube videos

CapSach articles

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 {{#invoke:citation/CS1|citation |CitationClass=web }}
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