[ralphstodomingo]

I would suggest you also look at the criticisms about the book you mentioned, Why We Sleep. I'd take the book's conclusions with caution.

[lowercased]

Have read some - it's not a panacea for sure. It did recently renew some interest in the subject for me, but yes, take it with some caution, certainly. It did make me re-evaluate some of the things I was doing re: sleep, and I've generally had somewhat better results since making adjustments.