In this book, Michael Babin, an accredited instructor under dim-mak master Erle Montaigue, focuses on the martial side of t'ai chi, as opposed to Taoist theory or solo forms. In it he delves into some controversial areas, including the use of internal energy, particularly ch'i-kung (sexual energy); the potential value of cross-training in compatible martial arts; training methods that will help students apply the fundamentals defensively; the use of safety gear and training for unarmed defense against weapons.
Let me open by saying that this is not an instructional book. It doesn't go into detail about specific applications of specific techniques, as the author feels that is something that is best learned under the guidance of an instructor, something he repeats throughout the document.
Instead, this book is a look at how Taijiquan is taught, even analyzing and critiquing the more esoteric elements of the art that can potentially harm a practitioner. While the essays are well written, some of the information is a bit dated.
While the author does encourage cross-training, he is a bit dismissive of certain aspects of martial training, primarily combat sports, but given his background in writing for law enforcement magazines, I can kind of see where he's coming from.
An interesting read, but it doesn't contain information that isn't already available elsewhere. It is very much a book for someone already studying Taijiquan who wants a little extra insight into the art and its applications.