Let me get it straight: ordinary reading doesn't work! Nobody can see what this martial-artist is getting at without acting as he instructed in this book. So I don't want to read this just before I fall asleep, because this book helps me train my body as well as my mind. I'm not brave enough to act in public as he did in every picture of his book, though. But I might be able to do this in my room or other quiet places to get rid of the negative past experiences such as PTSD(=Post Traumatic Stress Disorder), withdrawal, depression, and flashbacks. Certainly, I was so surprised when I started dealing with this book, because I assumed it would be too hard for the challenged to accept his training based on his martial art experiences;i.e; aikido. However, now I gradually could tell that he has been trying to help the developmentally challenged retrieve their self-confidence. That's why I decided to keep doing some exercises pictured in this book.