[najra]

Just a heads up there's been some controversy around some of the claims he makes in the book: https://guzey.com/books/why-we-sleep/

[criddell]

Walker has addressed some of that here: https://sleepdiplomat.wordpress.com/2019/12/19/why-we-sleep-...

On Peter Attia's podcast, he address a bunch of the criticism as well. The second edition of the book has been updated to correct errors.