Don't buy this book if you're a quitter. It's not for you. You'll hate it and you'll dismiss it. If you're a quitter get out of here and go get a yoga book. This is a book about hard-core physical training. It's about developing functional, combat strength and conditioning. It's about warrior strength. The Chain Reaction Training System developed by Ernest Emerson is a regimen that will build that extreme level of fitness and that extreme level of confidence. Each book comes personally signed by Ernest Emerson.