[cuanim]

While I agree that getting good sleep is necessary, I think the book does tend to over exaggerate the negatives. Alexey Guzey's article on this[1] is excellent and I recommend everyone to give it a read.

[1] https://guzey.com/books/why-we-sleep/

[n4r9]

Also worth checking out his retrospective a couple of years later: https://guzey.com/2022-lessons/#get-minimum-possible-sustain...

I'm not sure whether he's gone back on any of the specific criticisms he made, but his overall attitude towards sleep certainly seems different to before.