Amazon.se: Kundrecensioner: Why We Sleep: The New Science of Sleep and Dreams

Recenserad i Sverige 🇸🇪 den 9 januari 2021

Great book but unfortunately it did not come in a good condition. I wanted to give it away as a present but it was not possible.

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Mark Aurel

Nichts wirklich Neues

Recenserad i Tyskland 🇩🇪 den 2 september 2022

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Die Grundaussage des Buches ist die, dass Schlaf für die Erholung des Körpers und insbesondere die Gehirnfunktionen von äußerster Wichtigkeit ist. Dies hat jeder schon mal am eigenen Leib gespürt, der nach kurzen Nächten das Gefühl hatte, dass das Gehirn nicht richtig "klickern" würde. Demgegenüber ist die Aussage, dass allein ständiger vermeintlicher Schlafmangel - inbesondere Schlaf von weniger als 6-8 Stunden pro Tag - in einem kausalen Zusammenhang zu geringerer Lebenserwartung/erhöhtem Risiko für Krebserkrankung/geringerem Lernerfolg / höherer Fehlerquote in Krankenhäusern/ Unfallgefahr im Straßenverkehr u.a.m. mit einer gewissen Vorsicht zu sehen. Die Zusammenhänge sind zu komplex, als dass man Schlaf als den einen, einzigen ursächlichen Faktor für all die gesundheitlichen - gesellschaftlich statistisch relevanten - Phänomen ansehen kann. Der Einzelfall mag völlig unterschiedlich gelagert sein und man fragt sich warum so viele hochbetagte Menschen in den Altersheimen gibt, die mit wenig Schlaf dennoch ein gesegnetes Alter erreichen. Der Autor wird nicht müde anhand von empirischen Untersuchungen ( häufig seiner Freunde aus der Wissenschaft) und mit vielen folkloristischen Metaphern, die zwar verständnisheischend eingängig, aber mit der faktischen Aussage, die sie eigentlich untermauern sollen inhaltlich nicht zu tun haben, seine Religion vom Schlaf zu bekräftigen. So fordert er einen Umbau der Gesellschaft dahingehend, dass für alle Menschen ein ausreichender Schlaf gewährleistet werden soll. Schichtarbeit ist tabu oder sollte, vor allem in Krankenhäusern - stark reglementiert werden, der Schulunterricht muss später beginnen, u.a.m. . Insbesondere prangert er den Mythos von dem "Workaholic" aufs Schärfste an, der mit wenig Schlaf angeblich zu Höchstleistungen fähig ist. Dies ist mitnichten der Fall und hier fordert der Autor ein Umdenken in der Gesellschaft. Zwar zitiert der Autor eine Fülle von kleineren und größeren (Meta) statistischen Untersuchungen, die sicherlich auch kleinste Unterschiede aufgrund des Gesetzes der großen Zahl sichtbar machen, jedoch ist die Schlußfolgerung die Matthew Walker für das Individuum zieht falsch: "Amazing breakthrough".... jeder braucht nur für ausreichend Schlaf sorgen und dann hat er/sie den besten Schutz gegen Erkältung, Herzkrankheiten Demenz, Freßattacken, Diabetes, Gewichtzunahme, Häßlichkeit u.a.m. Denn: statistische Aussagen treffen gerade nicht 1:1 auf ein Individuum zu. Wer genetisch eine Veranlagung für Krebs oder Herzkrankheiten hat, dem helfen auch keine 12 Stunden Schlaf täglich. Im Ganzen ist das Buch geprägt von vielen Wiederholungen, insbesondere blumigen folkloristischen Metaphern unterschiedlicher Art die nur dazu dienen sollen ein und dieselbe schlafspezifische Aussage zu untermauern. Die meisten zitierten wissenschaftlichen Untersuchungen zum Thema Schlaf liegen schon eine Weile zurück, teilweise aus den 70er Jahren datierend, teilweise Anfang der Nuller-Jahre. Dabei gibt es interessante neuere Untersuchungen zur gehirnreinigenden Wirkung des Schlafes. Eine fundierte Quellenangabe, wie man sie z. B. bei den Werken Steven Pinkers findet, fehlt ganz. Ein großes Manko. Da hat wohl mal einer was "locker vom Hocker" geschrieben, verbrämt hier und da mit dem Hinweis auf wissenschaftliche Untersuchungen. Diese sind in ihrem Untersuchungsdesign und Aussagefähigkeit häufig eng angelegt und bestätigen nur die eingangs gemachte Feststellung das Schlafmangel sich auf die Funktionsfähigkeit des Organismus nun mal konkret und zeitnah auswirkt. Wer hätte das gedacht(?) Der volksnahe Schreibstil liest sich sehr gut, ist super eingängig. Daß man jedoch durch ausreichenden Schlaf vor den Zivilsationskrankheiten fürderhin gefeit ist, darüber sollt man ich keine Illusionen machen. Ja, regelmäßiger,erholsamer Schlaf ist wichtig für die Gesundheit. Die Botschaft ist angekommen. Sollte man aber trotzdem einen Herzinfarkt erleiden oder an Diabetes oder Demenz erkranken , wird man Dr Walker aber wohl nicht in Regress nehmen können. Schade eigentlich.

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Subhajit Ghosh

One of the best resources in the feild of "Sleep Science"

Recenserad i Indien 🇮🇳 den 23 januari 2023

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This book can change your conception about sleep. The author has broken all the myth about sleep with specific scientific data & profound knowledge. He has used terminology & analogy which is quite understandable for the person who does not have a scientific background.

Overall nice to read with relevant information.

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A. Menon

Informative overview of the necessity of sleep

Recenserad i USA 🇺🇸 den 19 december 2019

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Why We Sleep is an overview of the author's research into the purpose of sleep as well as the consequences of a lack of it. It discusses a lot of issues and the author gives his views on the evolutionary benefits and distinctiveness of humans, so it really is quite comprehensive. Most people today, myself included, just are somehow unable to get a healthy amount of uninterrupted sleep and the author does a good job of explaining the consequences of that to the individual through multiple cognitive lenses. He also considers the consequence to the country as a whole through its loss of productive capacity due to overworking.

The book is split into four, largely independent sections. The author begins by discussing how sleep occurs, including some of the neuroscience and the chemical cycles associated with our sleep schedule. The reader learns about the marginal differences between certain physiological cycles and the 24 hour day. In addition the causes of jetlag are explored as well as the required adjustment for changing time zones. The author discusses a bunch of experiments done where we were able to learn about our cicadian cycles and some of the differences in sleep requirements any cycle times by age. The author also highlights his novel view on how REM sleep was associated with human ability to light a fire which allowed them to sleep on the ground rather than be in an unstable position in a tree and this evolutionary advancement was essential for modern development. Perhaps, probably not, but the author truly is impassioned about the subject with strong views. The author then gets into why we need sleep and discusses with abundant experimental evidence, the benefits of sleep to cognitive abilities and the necessity of it for healthy living. Some remarkable pathologies are discussed, for example there was an individual who lost the ability to go to sleep and their body slowly lost its ability to function and the disease proved quickly fatal. The author highlights that the Guinness Book of World Records struck the longest period without sleep as a category due to its terrible health consequences and the author spends time on the consequences of lack of sleep to driving abilities highlighting the large number of fatalities that follow. The author also discusses the benefits of sleep to overall body health and gives substantial experimental evidence to the regenerative benefits of sleep to natural ailments. The author does highlight that sleep will not just cure cancer but simultaneously implicitly argues that it might. So the author, with evidence, strongly argues that sleep has the ability to help one regenerate far more than the general scientific community currently advocates. The author gets into dreaming and how sleep breaks up. He discusses how each form of sleep is required and they have different functional benefits. Furthermore the body needs for NREM and REM sleep differ in immediate priority but not in absolute priority and these results are discussed with experimental evidence for how the body catches up on sleep after being deprived. The author discusses multiple memory experiments that depend on prior sleep conditions and highlights the substantially better performance statistics of students who have had enough sleep prior to trying to learn facts. The author then discusses the consequences of sleeping pills, which are considered significant and detrimental. The author also clarifies the difference between sedation and sleep and makes it very clear that sedation is not sleep and does not serve as a remedy and can be counterproductive. Alcohol's detrimental effects are considered by their impact on sleep for example. The author goes through several common sleeping tablets and makes it clear he does not believe any are substitutes and argues they can become dependencies that create major long term problems. The author then discusses how much better the world could be if we all paid more attention to sleep and how overall productivity of the society could be enhanced. This sort of analysis is interesting but also in need of being the most skeptical of in terms of being a realistic analysis.

Why We Sleep is informative and entertaining. It is exaggerated at times and so aspects of the credibility of the book can be highlighted. The author argues multiple times how even one night of sub optimal sleep has distinct impacts on ability and how an all nighter can be catastrophic, only to bring up an example in which an individual goes without sleep for multiple days to then sleep and make a major scientific discovery. The point of the example was to display the benefits of sleep but it erodes the earlier argument that any lack of sleep puts the individual at a massive handicap. Thus the author argues too forcefully for the unrealistic, that we need 8 hours a day without exception, while highlighting that he himself often cant sleep properly once a week. Despite the at times marginally inconsistent tone, the book is a good reminder of the importance of sleep, a good reference for the scientific benefits of sleep and important tutorial on the health requirements for sleep.

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Kapil

Dispels the wrongly held conventional wisdom about sleep.

Recenserad i Indien 🇮🇳 den 7 september 2022

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Decent book. It explains quite well the importance of sleep and why it is imperative that we get at least 7-8 hours of sleep daily. The author presents the results of large number of studies that highlight the benefits of good sleep and the health problems a lack of sleep can cause. The most prominent help that sleep provides is the strengthening of memory and associations between varied kinds of memories we form.

However, towards the later part of the book, it seems like a advertisement of the benefits of sleep. Although the author presents results of peer reviewed studies, you can't help but feel like it is a propaganda piece.

Nonetheless, the book is a must read and it dispels a lot of our wrongly held myths about sleep.

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Parthss89

Astonishing and an EYE-OPENER...!

Recenserad i Indien 🇮🇳 den 12 juni 2020

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Mathhew walker, a neuroscientist shows how a good night's shut eye can make us cleverer, attractive, slimmer, healthier, and ward off many diseases like cancer, diabetes, heart attacks etc.

Have you slept well last night?? Well if you haven't then certainly you are feeling dizziness while reading this. This book is divided into 4 parts and 16 chapter. I would like to highlight few facts from the book that will surely help you.

1) Every creature on this planet have their on circadian rhythm, a cycle of melatonin. My rhythm is not as same as yours.
2) Not just this one thing, other is 'adenosine' a chemical that builds up in your brain when you're awake. This is also know as sleep pressure.
3) Avoid caffeine in evening as it blocks your sleep pressure. As the caffeine has the average half-life hours of 5 to 7 hours.
4) There are two types of sleep NREM (non- rapid eye movement) and REM (rapid eye movement). The architecture of sleep contains 5 cycles of these two sleeps which occurs alternately.
5) Deep NREM strengthens individual memories and REM sleeps offers fusing and building of information.
6) Our brain is just a memory storage device, with permanent and temporary storages, 7-9 hours of proper sleep required for the transfer of information.
7) The shorter your sleep, the shorter your life. The leading causes of disease and death in developed nations—diseases that are crippling health-care systems, such as heart disease, obesity, dementia, diabetes, and cancer—all have recognized causal links to a lack of sleep.

Well, these are the just few. Book contains more astonishing facts with experiments and demonstrations. The book is required to read in perusing manner with pen and paper.
It's becomes hard to stay with book after one part as many facts are repeated in later stage of books, but you can skip few chapters. There are very important points of note for individuals, educational institutions, hospitals, organisations and even governments. Besides, what I don't like is that writer just put 12 tips for healthy sleep at the end of book that he should have described in detail rather than irrelevant information. However the book is overall good. If you are in medical or psychology field then you might find it interesting to read. I recommend it to everyone who struggles to sleep at night and also all those who are still don't believe in the benefits of sleep and cutting their sleep hours unnecessarily to get productive. Trust me you can't be productive by skipping your sleep hours. According to author, many scientists and artists got their discoveries and masterpiece in their dreaming state. So what are you waiting for grab this book and just doze off.

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Amazon Customer

a bit heavey reading

Recenserad i Storbritannien den 25 oktober 2022

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heavey reading and a bit scarey in first chapter

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Shreyansh

Fascinating and insightful

Recenserad i Kanada 🇨🇦 den 16 januari 2022

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I picked up this book for the winter holidays and I think the timing worked well as I had time to evaluate and test some of the key concepts presented by the author. Since my twelfth grade, I assumed that six hours of sleep which many times used to end up less than six hours was enough. After reading this book I realized how under-slept I was during most of my youth years as such, it explains why at times I was less effective in learning newer skills faster than what was normally expected. I have experienced memory loss, not being able to recall during the exam what I studied nights before, lack of energy, unexplained body pain, and even anomalies in the routine blood test results. My hope now is that every night I will take advantage of one of the most powerful wellness tools - a goodnight's sleep, provided by the nature for health, vitality, and productivity.

I found the structure of the book quite useful. I agree with the author’s claim that mostly each chapter can be read individually and out of order without losing the grip on the overall narrative. I felt some of the theories are based on assumptions that are not necessarily scientifically proven. It is up to the readers how much discount they are willing to give and accept those theories unless proven incorrectly. I also thought some of the facts presented were slightly inflated to make a plausible case, but the central theme about the necessity of good sleep to enable human body systems upgrades, memory data backup, defragmentation, synchronization, biological firewall protection, and a re-set, that cannot be neglected.

Overall, I found the book fascinating and insightful. As a design consultant in the building industry, my biggest takeaway is to look for opportunities to help build spaces and integrate technologies to support quality sleep and rest for the well-being of its occupant.

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N.S.R.

Gute Erkenntnisse daraus gezogen

Recenserad i Tyskland 🇩🇪 den 24 september 2022

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Das Buch hat mir sehr gut gefallen und ich habe einige sehr gute Erkenntnisse für mich daraus gezogen, wie ich meinen Schlaf verbessern kann und welche Auswirkungen mangelnder Schlaf hat.
Teilweise ist das Buch aber sehr wissenschaftlich und etwas zäh.

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Bradikal

An amazing book! Shocking to me how it took me so long to notice the obvious!

Recenserad i USA 🇺🇸 den 21 december 2019

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WOW.

It's incredible to me that we can live almost an entire life without understanding such a basic necessity for life. We spend so much effort on our food, our water, and what we breathe, and yet take for granted a biological need that stingy Mother Nature has decreed must occupy almost ONE THIRD OF OUR ENTIRE LIVES.

This book lays it ALL out. Why we need to sleep, how we cheat ourselves, and how cheating ourselves of sleep is a MAJOR health hazard. Walker describes out how an under-sleeping workforce costs billions of dollars in lost productivity every month, and how almost EVERY major disease can be either worsened or even caused by lack of sleep. Even a flu shot's effectiveness can be reduced by 70% by not getting a full night's sleep following your getting immunized.

The book goes into detail what happens during a night of sleep, and how certain vital processes for memory, immunity from disease and even dementia-fighting processes need MORE than just 6 or 7 hours in order to take place.

After reading this book, I now see how badly I have shorted myself on sleep- as I suspect that most people do. My work schedule has at times been almost self-destructive, but I've also deprived myself by trading sleep for entertainment or for what I believed was more productivity.

Reading this book is like watching that movie, The Sixth Sense, once you know the big secret. You go back and examine times in life where you experienced health changes and then think about how your were sleeping. It's eerie how they line up. Even now I note my mental sharpness versus how much sleep I've just gotten and it's noticeable.

My biggest takeaway from reading this book is that I now make sleep much more of a priority, and I think I can make this a permanent change.

If I have ANY criticism of this book, it's that the tone of the book might leave someone with the sense that it's "too late now" if you have lived a long time with a sleep deficit. It's never explicitly stated, but was what I was thinking part of the time I was reading.

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Why We Sleep: The New Science of Sleep and Dreams

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