Great book to show how to do Bruce Lee's 1-inch punch. Covered are the mechanics and actual techniques of how to do the punch. Also shown is another variation - the 3-inch punch, which is alot stronger since you can generate more power. I think the book is excellent, and although it's not the "one" punch that can end all fights, it is a great punch to learn, even if only to learn to generate more power in your own punches. Currently taking Bruce Lee's art of Jeet Kune Do (JKD) myself, I think it's a great asset to learn to do this punch, to learn how to incorporate it into my own fighting regime. Of course I wouldn't depend on it all the time, as Lee didn't do so either, but it is good to learn in case the opportunity arises where you can and/or have to apply it.