Thanks for sharing this, I've got more reading to do! Though it's not off to a great start because the very first claim "U-shaped relationship between length o

Thanks for sharing this, I've got more reading to do! Though it's not off to a great start because the very first claim "U-shaped relationship between length of sleep and longevity, i.e. both short- and long-duration sleep are associated with higher mortality" is actually stated in the book :/