I like the emphasis on rehabilitative exercise in this book. Understanding that as you age you cannot keep up the exercise stress that you did when you were 18 or 25, this book outlines a healthy exercise program that sets out at the beginning to help you NOT hurt yourself. While I probably will not be running marathons when I'm in my 80's (yes I know that some people do), it is much more likely that I'll still be doing these exercises when I am that age.Recommended.