Retraction

I was very excited about a 2017 book Why We Sleep by Matthew Walker and praised it here. 

I just started Alexey Guzey's takedown of the book Matthew Walker's "Why We Sleep" Is Riddled With Scientific and Factual Errors, Sorry if you wasted money or effort on my account. The comments suggest weaknesses in the criticism and support Walker, including claims that Walker clarifies some of these things himself in later chapters. I think Guzey still has some very solid stuff here.