Harry Wong presents an interesting book on "Dynamic Strength" exercises -- or for others, "moving isometrics". While well written, there are some confusing bits in there that may take a little interpretation, but otherwise, I like his program for two reasons: 1) relatively simple, yet sweat-producing workouts, and 2) no equipment (besides two chairs, and a short stick or dowel rod) needed. As the cover suggests, this book is directed at martial artists, so you will find it geared to developing power in that regard; more definition rather than raw muscle. Besides some confusing instructions for a *few* exercises (maybe I just misread?), this is a great book, filled with illustration. There are plenty of exercises in here to keep you fit, and I would reccomend it.