This should be required reading for athletes as well as coaches. The author does an excellent job in defining the "weakest link" as a cause of injury or tissue failure, and distinguishing between the too-often blamed "over-training" and the real culprit, improper training. Stability is emphasized, as it should be, as the basis for effective movement. (As my Burmese boxing coach once told me, it does no good to launch a rocket from a bamboo pad.) Other good points of emphasis, among many, are the need to relax to maintain fluidity with speed, and to "be quick but don't forget to stick." Again, in boxing we were always told to stick and move, but too often the person advising this had no idea of how to go about it, let alone teach someone else to do it. Gray Cook does. Throughout the book, his prose is effective, his explanations are clear and concise, and his recommended goals are accompanied by explicit step-by-step instructions to achieve them. For poviding the reader an understanding of athletic movement and training and actual how-to for practice and execution, this book tops my list.