'Astonishing ... an amazing book ... absolutely chocker full of things that we need to know' Chris Evans

'Matthew Walker is probably one of the most influential people on the planet' Evening Standard

THE #1 SUNDAY TIMES BESTSELLER
TLS, OBSERVER, SUNDAY TIMES, FT, GUARDIAN, DAILY MAIL AND EVENING STANDARD BOOKS OF THE YEAR 2017

Sleep is one of the most important aspects of our life, health and longevity and yet it is increasingly neglected in twenty-first-century society, with devastating consequences: every major disease in the developed world - Alzheimer's, cancer, obesity, diabetes - has very strong causal links to deficient sleep.

In this book, the first of its kind written by a scientific expert, Professor Matthew Walker explores twenty years of cutting-edge research to solve the mystery of why sleep matters. Looking at creatures from across the animal kingdom as well as major human studies, Why We Sleep delves into everything from what really happens during REM sleep to how caffeine and alcohol affect sleep and why our sleep patterns change across a lifetime, transforming our appreciation of the extraordinary phenomenon that safeguards our existence.

'Startling, vital ... a life-raft' Guardian

'A top sleep scientist argues that sleep is more important for our health than diet or exercise' The Times

'Passionate, urgent . . . it had a powerful effect on me' Observer

Length: 341 pages	Word Wise: Enabled	Enhanced Typesetting: Enabled
Page Flip: Enabled	Audible Narration: Audible Narration Switch back and forth between reading the Kindle book and listening to the Audible narration. Add narration for a reduced price of $11.99 after you buy the Kindle book. Ready	Language: English

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Review

A top sleep scientist argues that sleep is more important for our health than diet or exercise (The Times)

I urge you all to read this book (Times Higher Education)

Passionate, urgent, convincing ... it had a powerful effect on me (Rachel Cooke Observer)

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, author of Stumbling on Happiness) --This text refers to an alternate kindle_edition edition.

About the Author

Matthew Walker's fascination with sleep has taken him from Nottingham to Harvard and on to the University of California, Berkeley, where he is currently Professor of Neuroscience and Psychology and Director of the Sleep and Neuroimaging Laboratory. He has published over 100 scientific research studies during the course of his twenty-year career. Why We Sleep is his first book. --This text refers to an alternate kindle_edition edition.

From the Inside Flap

It is time for us to reclaim our right to a full night of sleep. In doing so, we can be reunited with that most powerful elixir of wellness and vitality. Then we may remember what it feels like to be truly awake during the day.

Until very recently, science had no answer to the question of why we sleep, or what good it served, or why its absence is so damaging to our health. Compared to the other basic drives in life - eating, drinking, and reproducing - the purpose of sleep remained elusive.

Now, in this book, the first of its kind written by a scientific expert, Professor Matthew Walker explores twenty years of cutting-edge research to solve the mystery of why sleep matters. Looking at creatures from across the animal kingdom as well as major human studies, Why We Sleep delves in to everything from what really happens during REM sleep to how caffeine and alcohol affect sleep and why our sleep patterns change across a lifetime, transforming our appreciation of the extraordinary phenomenon that safeguards our existence.

--This text refers to an alternate kindle_edition edition.

From the Back Cover

'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 ... 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

'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, author of Stumbling on Happiness

--This text refers to an alternate kindle_edition edition.

Book Description

The phenomenal bestseller that's starting a sleep revolution, now in paperback. --This text refers to an alternate kindle_edition edition.

Product details

Format: Kindle Edition
File Size: 2834 KB
Print Length: 341 pages
Publisher: Penguin; 01 edition (28 September 2017)
Sold by: Penguin UK
Language: English
ASIN: B06Y649387
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Word Wise: Enabled
Enhanced Typesetting: Enabled
Customer Reviews: 3,313 customer ratings
Amazon Bestsellers Rank: #3,408 Paid in Kindle Store (See Top 100 Paid in Kindle Store)
- #4 in Cognitive Science
- #1 in Physiological Aspects in Psychology (Kindle Store)
- #1 in Neuropsychology (Kindle Store)

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Robert D. Crane

Sleep is important

Reviewed in Australia on 12 March 2019

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A good deep dive into the greater priority we should afford sleep. Sleep more perform better. More sleep is not a sign of weakness it is a sign of control.

5 people found this helpful

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Lakshman Ratnam

My sleep habits have changed since I started this book. Hope it's not too late for me.

Reviewed in Australia on 6 June 2018

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Not a light read because the writer has (quite rightly) included details of many studies and findings, but the take outs and findings are invaluable for parents, educators, employers and not least of all the medical profession. I wish I had known about many of the findings when my kids were growing up.

7 people found this helpful

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Kindle Customer

Very interesting read (listen)

Reviewed in Australia on 17 August 2019

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I have the audible version and I actually like the guys voice. He says that we may nod off during his reading as his voice is a bit soft. Once you get used to it, and focus on the content it is a great book. I like the way he backs up his points with studies and provides examples. He outlines the importance of sleep and what happens when we don't get enough of the right quality of it. Well worth the read or listen

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John

I've realised more any more how negliciting sleep has impeded me

Reviewed in Australia on 1 February 2020

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Sleep is a restorative process your body must have. A bodybuilder or any other serious athlete would NEVER neglect recovery following an intense training session. Yet people neglect sleep on a on a regular basis.

This books shows makes you realize important sleep is. When at university and my first job I was serious under slept and it caused me a lot of problems. If I was able to do it again then 8 hours sleep would be compulsory, and even get 9 hours during busy periods. Its so important to the brain and body. Now I don't like to drink after 7pm, as getting quality of sleep and being fully functional the next day is more important.

The most interesting book I've read for a long while. I've recommended to so many people.

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Mandatory read for the sleep deprived

Reviewed in Australia on 2 September 2019

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This book scientifically explains the importance of sleep and the dangers of sleep deprivation. Matt chanllenges t Society's heroic treatment of working late hours by showing the flip side of sleep deprivation. Cost to economy, cost to individual health and cost to life span is all too big.

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kindle customer

A brilliant book. Worth the time to read it.

Reviewed in Australia on 17 August 2019

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This book is very well written and worth every moment I spent on it. Evrry page is packed will valuable information. I am just so sorry I will not remember it all. I would read it a second time if I did not have so many other books calling for my attention. Well done Mathew. Well done. I learn't that the one best thjing I can do for my brain and body is get a full eight hours of sleep a night.

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Samantha

Well worth the read.

Reviewed in Australia on 16 December 2018

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Very interesting read and has helped me understand how my poor sleep has contributed to my current health status. I wish there was more information on how to improve sleep quality.

3 people found this helpful

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John Hutt

This book will change your life!!!!!!!!!

Reviewed in Australia on 10 June 2020

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A book for everyone, informs you about the value of sleep & what to do if you cannot sleep (like most of us). Has many answers & the info about why you don't sleep & and quotes the studies of where the info came from. It is called "Why We Sleep" I would add to that "& Why WE Don't Sleep". Includes info about adults, children & old people like me. I am following the info in this book & loving it. Buy it, it is worth every cent.

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Anna

Not helpful for insomniacs!

Reviewed in the United Kingdom on 8 September 2018

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*WARNING* Don’t read this if you suffer from any sort of sleeping problem. It will just make you worse. I thought it would be interesting but actually it just made me feel really anxious about sleeping, so much so that I developed full-blown insomnia! It’s all a bit scary for someone who is prone to sleeping problems. Read only when you’re in a healthy state of mind.

218 people found this helpful

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jlama

An essential book

Reviewed in the United Kingdom on 21 May 2018

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This book has been eye opening for me. Are there days when you don't have a clear mind? Are you sometimes forgetful? Are you sometimes less optimistic than you used to be? How patient are you? Do you feel you're not performing well enough at sports? Do you sometimes feel dizzy? Do you have headaches? Why do you think that is? Are you having too much coffee? Are you having too little? Maybe you have high blood pressure? Or low? Maybe you need glasses or maybe it's your glasses or contact lenses that are making you dizzy and not focused and giving you headaches?

Well there could be a much simpler explanation. You could be sleep deprived. Lots of people are and many don't even know.

This book explains why we sleep, the positive effects of sleeping in your mind, body and health and the negative effects that not sleeping enough has on them.

I really enjoyed this book. I am sleeping more now and I definitely feel a lot better, more clear minded and energetic. I can now clearly understand the effect a few nights in a row of not sleeping enough have on me... and I can detect it and easily fix it by just going to bed earlier! Life changing.

110 people found this helpful

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R. M. M.

Don't bother unless you're a doctor

Reviewed in the United Kingdom on 4 November 2018

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There is far more detail than most people would want. I feel he rather overstates his case - you are given the impression that if you don't get 8 hours, and get it every single night, you're doomed to a life of failure and mediocrity. And I didn't find much prescription. If you are having sleep trouble, what's the good of being told how terrible that is without being told how to do something about it?

I have given 3 stars on account of the serious research that has gone into the book. Otherwise it would be even less.

73 people found this helpful

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Debbie Young

Everyone should read this book

Reviewed in the United Kingdom on 4 June 2018

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Everyone should read this book - and act on its advice. it's a thorough and wide-ranging review of all aspects of sleep and its impact on the individual and on society locally and globally.

First addressing the process of sleep, why the different phases of sleep are necessary to health, and how modern life and technology disrupt healthy and natural sleep patterns, Walker sets a persuasive context for the problems caused by lack of sleep, from "drowsy driving" (responsible for more avoidable deaths than alcohol and drugs combined) to medical errors by sleep-deprived doctors, from depleting personal happiness to severely hampering the immune system.

At my age, the particularly powerful wake-up call (ho ho) for me is the much greater chance of premature death, even in your sixties.

We're reading this book for the BBC Radio Gloucestershire Book Club in June, and I'm glad this will help give his findings more of an audience. It's already an international bestseller, but I wonder how many people have truly changed their sleeping habits long term as a result? I hope I can find the resolve to change mine before it's too late, and I will be pressing this book on everyone I know with evangelical zeal. Part of me is also gratified to find scientific confirmation of old wives' tales and instincts about sleep: "an hour before midnight is worth two after", "Sleep is nature's healer", "Got to get my beauty sleep", etc. These and many more are all unassailable according to Walker. if we put old wives in charge of the world, it would be a much healthier, happier and peaceful place.

74 people found this helpful

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Ella Guru

Cod psychology

Reviewed in the United Kingdom on 29 December 2018

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I'm afraid this book is undermined by too many nonsequiturs. The fact that two things typically occur together does not mean that one causes the other. I note the huge number of glowing reviews on the book cover and within its introductory pages are written by journalists, not scientists. I'd be interested to know what scientists in the author's line of business thinks of it. Be very wary of accepting it's conclusions without a great deal of scepticism.

56 people found this helpful

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Islander

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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This book was recommended by a work colleague, and although I have only just begun reading it, I am already discovering some eye-watering details about how the inevitable, relentless lack of sleep, and disturbed sleep, encountered in my profession (I am a long-haul airline pilot) is doing my health serious long-term damage! If you are a long-term shift-worker, or enjoy (!) burning both ends of the candle, you must read this.

Matthew Walker's writing style is engaging, as are his Youtube videos, and you will learn important information that could, literally, prevent your life from being prematurely curtailed!

52 people found this helpful

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Carnivore

disappointing

Reviewed in the United States on 9 October 2018

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After hearing the author on the Joe Rogan podcast I excitedly bought the book...and then regretted it. The author went on a nauseating rant by telling us that sleep is important in 312 different ways...and yet didn't really offer any solid advice to help us get more sleep. In other words he stated the obvious, but didn't offer anything concrete or practical. I have no doubt he is an amazing sleep expert, but we all know that sleep is good for you. The challenge is figuring out how to get more of it or better quality.

I'll save you the money by summarizing the book:
"Sleep is really, really, really, really, really important. If you don't get enough sleep, you could have many problems because sleep is really, really, really important. I'm not going to tell you how to get better or more sleep, I will only tell you that sleep is really important."

Personally, I think he's holding out on this information for his next book. Grrrrrrrr.

681 people found this helpful

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Abhishek Debnath

Trust Me, Don't Mess With Sleep

Reviewed in India on 7 August 2019

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Sleep is a mystery. And this book is a lifesaver.

For normal folks like you and me, and for doctors or scientists as well, sleep's been always a mysterious phenomena. We humans sleep (preferably) one third of our whole life. This is an enormous amount of time which demands some attention. Though historically the attention has not been allotted to sleep it deserves, academically or culturally.
If you read this book (and you should; whether you love or hate or enjoy or avoid or have problem with or have some queries on sleeping) you'd understand why the evolutionary process didn't eliminate sleep from our biological dictionary. Why, though seemingly unnecessary/time-wasting/futile/unproductive, we still need to get a good night's sleep to get a long list of physiological, biological, psychological benefits. And if you by any chance fail to get the necessary amount of sleep (voluntarily or otherwise), you're a big gambler who doesn't have the idea about the grave repercussions. (No kidding.)

This book will be beneficial to everybody except those smart dudes who have unwavering faith in some generic and prejudiced sayings like: "Six hours of sleep is enough for a functional adult" or "You'll have chance to sleep all you need when you're dead" or "Our great leader sleeps only four hours/day, hence I should do the same to be like him." etc.

Don't trust them for Kumbhkarna's sake. Don't mess with sleep.

Some curious takeaways from the book:
● Not only the starting phase of sleep is important, when you're going to wake up in the morning is equally significant too. If you get up earlier without fulfilling your sleep-quota, there will be consequences. Serious consequences.
● Melatonin doesn't make you feel drowsy; it just reminds your brain, "Time to go to bed, fella." Part of a whole set of timekeeping mechanism actually. The chemical substance which in fact pressurize your system to make you feel sleepy is named Adenosine.
● Dreaming makes you more visionary/creative/shrewd, really. And dreaming is not just some "commercial breaks" between slumber, it has serious impact on your mindset/thinking/worldview/self assessment and many things more.
● Homo sapiens is "biphasic" in case of sleep requirement. That is, we humans are biologically inclined to get sleep two times a day. Taking a siesta is not just a cultural phenomena in origin, but deeply biological. Dozing after lunchtime is absolutely human-like, nothing shameful if you think so.
● It's not mere practice that makes a person perfect. Practice, followed by a good night of sleep is what required for perfection. And the writer is serious about that.
● You can sleep as many hours trying to recover/make up the sleep that you've lost or skipped; but make no mistake, humans can never "sleep back"/rebound the sleep once lost.
● "Night owls" are real, not myth. As real as the "Morning larks" are. Don't bully them; or feel guilty of being one.
● Caffeine is the most widely used (rather abused) addictive psychoactive stimulant drug in the world. It is also the only addictive substance that we readily give to our children and teens.
● And a lot more.

65 people found this helpful

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kilara

I can’t rate this book highly enough. As a ...

Reviewed in the United Kingdom on 23 June 2018

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I can’t rate this book highly enough. As a mental health professional I am referencing this frequently and recommending it to my patients. A must read for everyone and especially for parents

29 people found this helpful

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Gonçalo

Made me understand the impact of sleep in learning

Reviewed in the United Kingdom on 20 April 2018

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This is the best book I read in years.
The author is a neurologist and talks about how the brain works when we are sleeping.
How sleep helps the learning process, memory, etc.
There is a science behind sleep, that few people know about. I wish I had read this book when I was in university.

27 people found this helpful

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Bharath Ramakrishnan

Very important reading

Reviewed in India on 29 October 2018

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Sleep has been a big mystery for long, as it has been unclear what purpose it serves, and why natural selection did not weed it out. After all, in earlier times, the period of sleep must have been one of considerable danger for humans (and even now for many animals and birds). And yet, sleep is a common requirement across the animal kingdom as well. In fact, birds and some sea creatures have the remarkable ability to sleep half a brain at a time.

Matthew Walker is a sleep scientist and does an exceptional job in this book of explaining what sleep achieves for us. In fact, sleep deprivation is extremely dangerous and there is not enough awareness of this. Modern lifestyle has dealt a blow to both our duration and quality of sleep, and the effects are already quite apparent.

While sleep has not completely revealed all its mysteries to us, a lot is now known after painstaking research over several years. Our sleep shuffles between NREM, Light and REM sleep – and all of them have their purpose. NREM sleep fortifies our memory helping in longer term recall, while REM sleep & dreams lend emotional balance and help us get to the big picture. The book discusses a large number of experiments detailing what happens when we skip sleep. Depending on the sleep cycle and the quantum of deprivation, the ill effects are nothing short of disastrous – lower immunity, failing memory, loss of emotional balance, pre-disposition to serious diseases such as diabetes, dementia and even cancer. Getting adequate sleep (~8 hours) on the other hand makes people more creative & productive other than being healthy.

Somehow, our cultures today do not emphasise the importance of sleep, as much as we do exercise and diet. So much so, that sleeping less is mistakenly regarded as a confirmation of working hard and being more ambitious. The assumption that each of us can do with varying periods of sleep is largely a myth as well. While a genetic mutation allows a few to function effectively with around 6 hours of sleep, this is extremely rare. Almost all of us do need ~8 hours of sleep. There are tips on improving sleep quantity as well as quality all through the book, such as regulating caffeine in the later part of the day.

Most of us are guilty of not according sleep the importance it deserves, and this book is an eye opener. This is a book everyone should read. There are very important points of note for individuals, educational institutions, hospitals, organisations and even governments.

43 people found this helpful

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J. Haddick

If you don’t snooze, you lose

Reviewed in Germany on 14 March 2018

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Nein, diese Wahrheit bezieht sich nicht auf den Snooze-Button des Weckers, sondern auf die Wichtigkeit des Schlafes. Den Snooze-Botton sollte man nämlich nach Möglichkeit gerade NICHT drücken, sondern mit dem ersten Weckerklingeln aufstehen. Warum – und unglaublich viel anderes wissenswertes – erklärt Matthew Walker in seinem Buch Why We Sleep. Walker ist Professor für Neurowissenschaften und Psychologie an der UC Berkeley und einer der führenden „Schlafforscher“ weltweit. Dabei forscht er nicht nur im Labor und am Schreibtisch. Walker war auch schon als Berater für Teams aus der NBA, NFL und der Premiere League tätig, sowie für Pixar, Regierungsorganisationen, Technologiefirmen und Firmen im Finanzsektor.

Das Buch ist in vier Teile eingeteilt: (1) This Thing Called Sleep: Hier erklärt Walker die biologischen Grundlagen des Schlafes und vermittelt ein Verständnis für die unterschiedlichen Schlafphasen. (2) Why Should You Sleep?: Hier geht es um die absolute Wichtigkeit des Schlafes und die Folgen von mangelndem Schlaf. (3) How and Why We Dream: Hier wird die Bedeutung von Träumen erläutert. (4) From Sleeping Pills to Society Transformed: Hier wird der gute und der schlechte Umgang mit Schlaf in unserer Gesellschaft dargestellt und ein Weg in die Zukunft gezeigt. Ein Anhang mit zwölf Tipps für gesunden Schlaf rundet das Buch ab.

Wer ein wissenschaftliches Interesse mitbringt, wird einiges lernen können (obwohl das Buch allgemeinverständlich geschrieben ist), aber auch der Leser, dem es primär um den praktischen Umgang mit dem Schlaf geht, kommt absolut auf seine Kosten. Man muss nicht jedes wissenschaftliche Detail verstehen, um von dem Buch profitieren zu können. Warum ist eine Stunde mehr Schlaf oft produktiver als eine Stunde mehr Lernen? Welchen Einfluss haben Alkohol und Drogen auf unseren Schlaf? Wie kann man Schlafproblemen entgegnen und warum sind Schlaftabletten oft die falsche Lösung? Welche Rolle kann ein Power Nap haben? Wie kann man mit Jetlags umgehen? Und… warum sollte ich den Snooze-Button meines Weckers lieber nicht nutzen? Auf diese Fragen und viele andere hat Matthew Walker Antworten. Absolut lesenswert!

55 people found this helpful

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Antoine

Important subject but poorly written

Reviewed in the United Kingdom on 18 February 2019

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I didn’t enjoy reading this book although I think the subject is immensely important. I forced myself to read through till the end because it’s a timely subject and not many people are talking about it. However the book is tedious, repetitive and very poorly edited. It is not pleasant to read, at times depressing, too technical and the editorial staff are obviously on leave. The book contains at the very end a one-page list of tips to improve your sleep, thrown in as an afterthought, whilst it should deserve a full fledged chapter and it was clearly the most useful and practical part of the book.

This guy might be a professor but bless him, he can’t write for love or money. He has a tin ear and it’s very excruciating to read. He’s onto something however. I think that the fitness and nutrition industry will (or should) wise up to the need of adequate sleep. In that sense this book is a piece of sensible advice and warning.

13 people found this helpful

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E P Bharucha

Sleep - What lack of it does to you

Reviewed in India on 4 August 2018

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A very lucid explanation of sleep and why a full 7 to 8 hours a night are required.

I have spent a lifetime of cutting down of sleep time to get some more work done. If I had read the book earlier, I would organised my life differently.

41 people found this helpful

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PurpleBoots

Enlightening

Reviewed in the United Kingdom on 18 October 2018

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This book is extremely well written and so eye-openingley informative. Being interested in all aspects of sleep hygiene and the mechanism of sleep, I was delighted when I found this book. I suffer badly with a sleep disorder and live with permanent sleep deprivation, so am always keen to read up and learn as much as I can to ensure I am doing everything I can to get a handle on the deprivation.

I feel now, having read this book, that I have read everything there is to know and understand about sleep, why we sleep and more importantly, the dreadful damage that lack of it does to us. The book is so thorough and in-depth and I feel all aspects of the topic have been fully covered. It is written in plain language, so very easy to understand.

I have learned so much about sleep deprivation now and the harm it does to physical and mental health. I understand a lot more about the dreaming stages and I feel fully 'trained' to go out there and sleep to the best of my ability, for the sake of my life!

9 people found this helpful

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