![TED Talks on Twitter: ""Sleep is not an optional lifestyle luxury. Sleep is a nonnegotiable biological necessity." Watch Matt Walker's full talk here: https://t.co/V2Aku9HaLd https://t.co/itulJi5tB1" / Twitter TED Talks on Twitter: ""Sleep is not an optional lifestyle luxury. Sleep is a nonnegotiable biological necessity." Watch Matt Walker's full talk here: https://t.co/V2Aku9HaLd https://t.co/itulJi5tB1" / Twitter](https://pbs.twimg.com/media/D6zCFleWwAMeQHk.jpg:large)
TED Talks on Twitter: ""Sleep is not an optional lifestyle luxury. Sleep is a nonnegotiable biological necessity." Watch Matt Walker's full talk here: https://t.co/V2Aku9HaLd https://t.co/itulJi5tB1" / Twitter
![Why We Sleep — a tale of institutional failure” | Statistical Modeling, Causal Inference, and Social Science Why We Sleep — a tale of institutional failure” | Statistical Modeling, Causal Inference, and Social Science](https://statmodeling.stat.columbia.edu/wp-content/uploads/2020/03/Screen-Shot-2020-03-24-at-6.11.11-PM.png)
Why We Sleep — a tale of institutional failure” | Statistical Modeling, Causal Inference, and Social Science
![Why We Sleep: Unlocking the Power of Sleep and Dreams by Matthew Walker PhD, Paperback | Barnes & Noble® Why We Sleep: Unlocking the Power of Sleep and Dreams by Matthew Walker PhD, Paperback | Barnes & Noble®](http://prodimage.images-bn.com/pimages/9781501144325_p0_v3_s1200x630.jpg)