I can not rave enough about this book. Every person needs to read this book. This book outlines in detail and scientific facts of the importance of sleep in vitro, childhood, adolescence, adulthood, and later adulthood. This book points out the importance of sleep and the dangers of not getting quality sleep; the effects on physicians, truck drivers, and students who pull "all-nighters." This book outlines the benefits of having school start later in the morning for children in school and how it affects their REM sleep. While reading this book my mind was completely blown away by the things the author was stating and the awesome footnotes. I realized that caffeine, coffee, alcohol, light settings in my home has been impacting my Deep REM sleep. 

I wish I had this book years ago but I feel that knowing about how sleep impacts my over life longevity has helped me sleep better at night. It is all thanks to this book and other things I am doing to make sure I am sleeping enough at night. As a therapist, I am pledging to no longer suggest melatonin, a drug to help my clients sleep. I am looking online for natural ways to help my clients sleep. As of now, the most effective treatment for chronic sleep (according to the author) is CBT-I (Cognitive Behavioral Therapy-Insomnia). I plan on using CBT-I once I receive proper training on it. What a wonderful non-fiction. I recommend 10/10. Please take a nap, they are good for you but not after 3 pm because it will interrupt your deep REM sleep.