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  • Why We Sleep

  • The New Science of Sleep and Dreams
  • Written by: Matthew Walker
  • Narrated by: John Sackville
  • Length: 13 hrs and 31 mins
  • 4.8 out of 5 stars (543 ratings)

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Publisher's Summary

Brought to you by Penguin.

The number one Sunday Times best seller.

TLS, Observer, Sunday Times, FT, Guardian, Daily Mail and Evening Standard Books of the Year 2017.

Penguin presents the audiobook edition of Why We Sleep by Matthew Walker, read by John Sackville.

Includes a bonus PDF of graphs and diagrams.

Sleep is one of the most important aspects of our life, health and longevity and yet it is increasingly neglected in 21st 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.

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 audiobook, the first of its kind written by a scientific expert, Professor Matthew Walker explores 20 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.

©2017 Matthew Walker (P)2017 Penguin Books Ltd

Critic Reviews

"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)

"Startling, vital...a life-raft." (Guardian)

What listeners say about Why We Sleep

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    4 out of 5 stars

My sleep is broken

My sleep is broken, I play games or surf internet for hours before going to bed at midnight and I lazily snooze the alarm at 8am and I continue to do so till 10am or even 11 sometimes. I was looking for a silver bullet to fix my sleep and I picked this one.

So, did it help?
ah, er.. em, yes.

Out of 13.5 hours of material on sleep, author hardly covers on how to fix your sleep but reveals the horrors that are inevitable if your don't change your sleep habits. The author, a sleep scientist strongly advices on having sleep for 7 hours to 9 hours, which is quite shocking because if billionaires, entrepreneurs and businessmen spend 37.5 % of their daily time in sleeping then how are they going to achieve their goals? But if people don't adhere to a good sleep routine then destruction and downfall is inevitable, meaning? people die with bad sleep habits.

According to author, 8 hours of sleep for an any individual is a helping aid in creative thinking, retaining the study material, performing good at office or in becoming a star athlete. If a person has not slept for 22 hours then the person's state of mind is equal to being drunk.

To summarise, maintain a good sleep routine by maintaining a consistent sleep schedule, avoid caffeine and alcohol, don't nap during daytime after 3pm, try to avoid alarms as it spikes up the blood pressure in your sleep because of sudden sound. Remember, sleep deprivation results in serious health issues.

18 people found this helpful

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Well researched book.. but too long and monotonous

There is no iota of doubt that the book is well researched and all the causes and examples have been explained in details. However, the book is not meant for everyone. It is very long and monotonous and gets boring and complicated in the middle. Not an audible stuff!

4 people found this helpful

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amazing, lots of information about why to sleep

amazing, lots of information about why one should sleep and how it impacts health, economics, happiness.

3 people found this helpful

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Very informative!

Very interesting and informative book. The narration was also very pleasant. Finally I will stop feeling guilty about sleeping!

3 people found this helpful

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very informative

lot of scientific insights shared in this book and also very informative and awesome book

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Very well researched and informative. On point.

Must read or listen book for today's hyperactive people who seem to confuse and conflate activity with accomplishment. Useful to learn the importance of sleep on various aspects of human and life in general. Recommended reading and listening for all.

1 person found this helpful

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One of the most important books you'll ever read

This is one of the most important books I have read so far simply because of the lack of guidance/literature on such an important health-related aspect of our lives which most of us take for granted. It scares you, yes, but more importantly educates you in making you aware of perhaps the low-est hanging fruits in terms of health, i.e. sleep, and perhaps one which will plentiful returns when invested in over the long run. This gem of a work by Matthew Walker is a must read for all, it will at the very least, bust one myth that you have about the phenomenon that is sleep. I for one, hope to put certain learnings from the book in practice.

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Must read

One may have heard of many self help books but it all doesn't work until the brain has had a good night sleep a day before.
So listen/read this book to know the importance of sleep and how to act upon it.
The most beautiful thing about this book is it's application is so universal that it applies to all Ages(specially babies and Old), social classes, cultures etc..

1 person found this helpful

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Much required in these times.

The author goes about the whole Idea of sleep and why we need it and how to get it. It has opened my eyes.

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profound impact

one of the books which i would recommend to my son when he grows up.

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  • Winston Lee
  • 06-03-18

Informative with passionate narrator

I would recommend this book to anybody who is currently sleeping less than 7 hours per night and wants to find a shortcut to improving their life in all aspects. I found the information here enlightening and the evidence compelling.

The narrator is great too, he manages to imitate the various accents and also reads the sentences in a way that very accurately brings across the weight and meaning of the point that Matthew Walker is trying to bring across. I felt like the narrator was the writer himself.

6 people found this helpful

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  • Paul Drakeford
  • 14-08-20

Life changing

While the aim of this book is to get you to close your eyes it ultimately opens them....to the damage done to one’s own health and the public health of not getting enough sleep. Plenty of great tips on how to improve sleep.

2 people found this helpful

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  • Mark J.
  • 05-12-21

Amazing, why is this not compulsory!

so many applicable insights but so easy to know where to start. can't stop boring people with it over dinner!!

1 person found this helpful

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  • Margarita Marti
  • 01-10-19

One of the best books

Enlightening! Every policy maker must read this book. Many times we skip straight to solutions. This book is all about the why and I believe it is vital that our why is clear. Why we sleep? Explains the importance of sleep, what improves its quality and what doesn't.

1 person found this helpful

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  • Cristian Vlad Lupa
  • 19-04-18

Excellent

One of the best books I read in the last year! Everyone should read this book

1 person found this helpful

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  • Oblaky
  • 23-05-22

Important read for better quality of life

Happy with the reader and the contents, of course, too. A book worth reading and giving out to people in your life. Sleep has been underappreciated and misunderstood so long that this will have a profound effect on your relationship with it. Many important lessons for you and yours.

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  • David E.
  • 05-02-22

Enlightening book about sleep

Enlightening book about why we sleep. Every proven fact told is accompanied by evidence. You will never want to neglect sleep again.

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  • Anonymous User
  • 04-10-21

Everyone should learn this at school or at home

Knowledge is power and if you use health tips to improve your daily life (sleep knowledge in this particular case) it will most probably make all the difference during your journey through life.

I extremely recommend reading/listening to this book and apply its recommendations during our sleeping routines in order to obtain positive results.

Improving our sleeping quality and quantity makes our daily mood change for good, it increases our concentration, memory and motivation levels at work or during any other activity.
What's more, in doing so, we also avoid many other negative side effects due to a lack of it.

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  • Reuben
  • 08-09-21

Sleep is vitally important!

Eye opening book. Wish I would have read this earlier! Power of sleep is unmatched!

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  • Mr. Paul Velonis
  • 31-07-21

A must read

An amazing reference for sleep research.

A must read tor any parent, teacher, doctor, manager to understand the link between sleep health and performance.

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  • Bonnie
  • 11-08-18

Discouraging for insomniacs

This book is full of fascinating information and studies about every aspect of sleep you can imagine from animals to humans at every stage of their lives. As someone who has suffered with poor sleep for years, I was keen to hear some ideas about how I can improve my sleep. A few things about this book really annoyed me though. The main thing was that throughout the book it is implied that reduced sleep is a 'lifestyle choice' for people who do not priortise it. This may be the case for some people but I am desperate for more sleep. It is also depressing to hear in detail how much irreparable damage my poor sleep has done to me over the years - it sounds like a terminal illness! Finally, it makes it sound like insomnia is easily treated by CBTi. I have not found this to be the case. It's going to be even harder for me to reduce my anxiety and challenge my negative thoughts about poor sleep having read this book. Having said that I will forget all about it soon anyway as poor memory is a major feature of poor sleep.

216 people found this helpful

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  • Amazon Customer
  • 20-01-18

Ground-breaking, so the flaws are forgivable

Potentially life changing, which you cannot say about many books. The science is illuminating and the evidence is extremely persuasive.

It is not without flaws. The futurology and social commentary is less convincing. If you spend much of a book setting out the facts, supported by evidence, in order to build an argument that is not widely understood, you endanger your overall message if you veer off into ideas and opinions. In that regard it also felt padded a little.

The narration is very good, if a little "high and mighty" in its tone.

But pay little attention to these flaws. The core of this book is truly profound, and may cause you to rethink how you live your life.

And if you want an executive summary: Get another 30-60 mins sleep per night. You won't regret it.

127 people found this helpful

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  • R Blades
  • 15-01-18

Is Sleep just for the Weak?

A hearty NO! Matthew’s 20+ years of sleep studying and psychological tests have delivered some of the biggest results for humans in the betterment of themselves, their safety and society. This is a must read(or listen) book for all who are interested in prolonging their life or taking steps so as not to shorten it. John narrates the book wonderfully and really brings the enthusiasm that Matthew Walker pens. From increasing you chance of fighting off the common cold to even improving your chances of surviving cancer “Why We Sleep?” is an insightful and motivating book.

70 people found this helpful

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  • Anonymous User
  • 20-01-18

Facinating and useful

Sorting out my sleep patterns has been my main New Years resolution as I have come to the conclusion that most other things in my life will improve greatly once this is achieved.
But I hadn't realised the vast catalogue of problems sleep deprivation is causing in the developed world. And that almost all of us will be suffering from it to some degree.
This book is both very interesting in explaining the mechanism of sleep, and everything in our modern lives that have an influence on the quality of our sleep.
Concluding with a comprehensive list of everything we can do to free ourselves from the misery of tiredness and under performance in the day and sleeplessness at night.
I'm going to listen again. And this time I'm taking notes.

50 people found this helpful

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  • Simon Johnson
  • 11-02-18

A life-changing book

Would you consider the audio edition of Why We Sleep to be better than the print version?

The narrator does an excellent job stressing the key phrased and pacing the narration in such a way that I believe I take away more information that I would have if I had read the book myself.

Who was your favorite character and why?

Of course everyone 'knows' that a good night's sleep is important, but my god the author brings together such a body of evidence that I'm left in no doubt of the benefits of 8 hours of natural sleep. You will never take sleep for granted again. I'm convinced that this book will save lives and the health of many people.

What about John Sackville’s performance did you like?

Well paced and a great voice.

Did you have an emotional reaction to this book? Did it make you laugh or cry?

It's more of an intellectual and scientific book, but the importance that sleep plays in our life comes across in a profound way.

Any additional comments?

The author encourages the reader to read/listen to the chapters in the order that appeals to them.

30 people found this helpful

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  • Ben
  • 08-03-18

The most fascinating book I have read in 20 years

Would you listen to Why We Sleep again? Why?

Yes, and I am already (immediately after finishing it). The subject has changed my life and I want to ensure I took it all in first time!

Which scene did you most enjoy?

I cannot pick one chapter. They are all exceptional. The beauty of the writing is that you can dip in and out of chapters and read them in any order and they still make perfect sense. Fantastic!

If you made a film of this book, what would be the tag line be?

Sleep: Evolutionary Elixir (SEE for short!)

Any additional comments?

This book has already changed my life and continues to do so. It is no exaggeration to say it is the best book i have ever read/listened to. I am lucky in that I do not particularly suffer from sleep problems but, either way, the book is fascinating, interesting and informative. I could not recommend this book more highly.

28 people found this helpful

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  • irmish
  • 18-04-18

Very interesting and possibly life changing book

Would you listen to Why We Sleep again? Why?

The deep and calm voice of the narrator makes this audiobook a pleasure to listen to. I will certainly re-listen to 'Why We Sleep' because it offers plenty of interesting information on the importance of sleep and it's packed with tips on how to make your sleep healthier; to make a full use of the knowledge the book offers, I need to listen to certain chapters again and take some notes.

Any additional comments?

The book is potentially life changing, especially if you happen to suffer from sleep deprivation and/or ill health potentially caused by it. It makes a very strong case for prioritising good sleep and it motivated me to care for myself and my family better. Of particular interest to me were the author's discussions of children's sleep, it's potential connection to ADHD and dangers of sleep deprivation in youngsters. I became a much more sleep-conscious parent as a result. I highly recommend this audiobook!

24 people found this helpful

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  • Mr S J Whittle
  • 07-10-18

You’ll regret being alive....

I like Matthew Walker, he’s a nice guy, very clever and has put a lot of research into sleep and I’d say if anyone knows his stuff it’s him.

This book is an absolute nightmare in it’s self. I am more surprised that there is actually a human race still living after hearing the consequences of deprived sleep in all forms of which we are all suspect to at some points throughout our lives.

I’ll do you a favour, I’m nice like that, save yourself 13 hours of torture and watch Matthew on Joe Rogan’s podcast. He’s talking for 3 hours and it’s a much better nutshell to listen to.

I’m gutted I put myself through this audiobook.

23 people found this helpful

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  • Louise
  • 12-12-17

Fantastic!

This audiobook has given me a lot of good advice and knowledge on how my daytime habits affect my sleeping habits.
Lots of research and stats, as well as 12 top tips for healthy sleep.
You need to dip in and out rather than listen in one go, but I would certainly recommend Matthew Walker's audio.

14 people found this helpful

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  • Mr. B. Lynch
  • 08-03-19

Woke me up

Really well-considered work. Helped me to start to monitor my sleep pattern and working to obey first law, get to bed and up about same time every night and morning. Have struggled with diabetes and obesity for years. Now sleeping better and making good progress.

11 people found this helpful

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  • Anonymous User
  • 15-01-18

If you value your own health, listen to this book.

I was hesitant to purchase this book, as it wasn't something I would normally listen to. However, listening to this book has been one of the most important things i have ever spent my time doing. This book covers the recent and incredibly salient break throughs in the understanding of sleep and the consequences of its neglect. If you value your health/life expectancy or the health of those you care about you must listen to this. My prior attitude towards sleep was reckless. As a student studying maths and physics I regularly sacrificed sleep to complete assignments and other tasks, and in hind sight it's clear how deleterious that behaviour is. Every human should hear this, so their attitude towards sleep recognises/matches its true importance.

Also, fantastically well articulated concepts, by the author, and supurb reading by the reader. (only a few pronunciation mistakes throughout the entire book (impressive!))

37 people found this helpful

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  • Paul Kuhnast
  • 15-03-18

amazing book. loved it. so mush fresh information.

easy too get through. great narrator. easy to digest information. I really didn't think I could learn so much about sleep. literally changed me while listeniing to it.

21 people found this helpful

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  • Daniel
  • 20-07-18

Awaken to sleep

Sleep scientist Matthew Walker lays out nothing short of an all out crusade about the importance of sleep in this well composed work, of which the chapters contained can easily be navigated in any order to what area of sleep knowledge the reader is looking to know as suggested by the author in the prologue.
The book does revolve largely around the affects of sleep or lack of on the brain and its different components most affected the frontal cortex, hippocampus, hypothalamus etc.
Also mentioned numerously throughout are the sleep cycles particularly REM & NREM, and the studies conducted to research the effects of the type of sleep people get, not all sleep is equal as he points out.
Everything else from sleeping conditions of which the are over 100 documented types, to the negative effects on every part of the body that poor sleep can cause, believed by Matthew to be of greater seriousness than poor diet or exercise but gets around 1% the attention of these other societal affecting crises of the modern age.
Put short I was highly engaged through most of the book, I'm sure it could be updated in the future with the amount of research being conducted into this developing field, Matthew does his best to dissuade readers from the many sleep aid developed drugs available on the market, to add the sleep aid market which is worth around 30billion dollars annually in the US shows the severity of the problem at hand, he rather lists quite well alternative ways to manage a good 8hrs shut eye into every 24hr period.
The narrator can come across sometimes as nothing short of a sleep nazi, though I believe anyone unconvinced of the bennifits of a good sleep to purchase a sleep tracking smartwatch of which this reader recently obtained and notice the affects on the body particularly the cardiovascular data recorded and you will soon learn to manage the sleep you get in a very different way, the parts in the book on dreaming are also a favourite of mine.

18 people found this helpful

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  • Amazon Customer
  • 24-12-20

This book has been debunked

If you Google "Matthew Walker debunked" you'll find the link where Alexey Guzey has fact checked just the first chapter and found that the claims are not evidence based. Specifically
*shorter sleep does not imply shorter life span
*sleeping less than 6 hours a night does not double your risk of cancer
*lack of sleep will not outright kill you
*the World Health Organization never declared a sleep loss epidemic
*two-thirds of adults in developed nations do not fail to obtain the recommended amount of sleep
Guzey provides citations and shows that Walker's citations are misleading or inaccurate.
Wish I never wasted my time reading this book, or stressing out about my sleep

12 people found this helpful

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  • Sally C.
  • 11-09-18

A must read for absolutley for everyone now!

I believe this will change everyone's lives for the better. it's easy to listen to and relatively easy to make changes for positive outcomes in all aspects of our personal lives. some messages we already knew and now here's scientific evidence supporting them. May authorities who have power to implement changes that can affect many, read this and act quickly.

9 people found this helpful

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  • Anonymous User
  • 11-09-18

Amazing. Made me rethink sleep and prioritise it

This book was shocking and amazing. Please listen. It will make you rethink how essential slepp is.

7 people found this helpful

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  • Philip
  • 04-06-19

A must for doctors and insomniacs

Not sure I enjoyed the narrator as he sounded more media than academic but the content was seriously enlightening. I wonder if a a few critiques of this book might have helped the context although one hopes such an eminent academic would have got the balance right. At times the narrator overstressed matters a little more than I think the author might have intended. I felt the medication section was a little deficient as this was my main interest. Nevertheless, a huge task summarising a lifetime of study and what a huge subject! Hopefully Matthew Walker will revise over time as new research emerges. Unusually, I may reread this more than a few times and will download the book for my reference (as an academic reader in a related discipline hopefully this might offer a few references).

6 people found this helpful

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  • Anonymous User
  • 28-02-19

goodnight everyone.

a real eye shutter! The knowledge of sleep is sound and should never be interrupted by modernity. The path to good sleep is worth the travel. Everyone should read this book. I now seek 8 hours every night with the evidence uncovered in this must read .👁🙏

6 people found this helpful

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  • Anonymous User
  • 23-02-18

Amazing book

This book is absolutely fascinating, I always knew sleep was important but until I listened to this I never appreciated how vital it is to every part of our life. I wish Matthew’s recommendations to society were followed in their entirety, what a huge difference it would make to our lives and the lives of our children. I for one will implement as many of his recommendations as I can and for the rest of my life I will prioritize sleep in my life!! Thanks so much for writing this book Matthew!

6 people found this helpful

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  • Anonymous User
  • 28-01-19

Depressing

Leaves you feeling anxious and depressed if you have sleep problems. you are going to have a stroke, heart attack, develop dementia erc. however some interesting facts about why we sleep. If you worry about sleeping don't read this book.

5 people found this helpful