Sleep is a restorative process your body must have. A bodybuilder or any other serious athlete would NEVER neglect recovery following an intense training session. Yet people neglect sleep on a on a regular basis.
This books shows makes you realize important sleep is. When at university and my first job I was serious under slept and it caused me a lot of problems. If I was able to do it again then 8 hours sleep would be compulsory, and even get 9 hours during busy periods. Its so important to the brain and body. Now I don't like to drink after 7pm, as getting quality of sleep and being fully functional the next day is more important.
The most interesting book I've read for a long while. I've recommended to so many people.