This book is an essential resource for everyone, not just training professionals and competitive athletes. The functional training approach advocated by Boyle in this book and by others has now enjoyed widespread acceptance. Indeed, anyone who has undergone physical therapy will recognize many of the exercises, and I believe that anyone, regardless of age and level of physical activity, would greatly benefit by following a functional training regime. On the other hand, some may find the book a bit daunting, and some may find books by Mark Verstegen to be more accessible.The book is well-organized, with plenty of pictures accompanying the descriptions of the various exercises. While many training guides have sample training program, Boyle does a good job explaining the essential elements that should comprise any program. For the most part, the exercises are easy to understand, but I do have some quibbles. As noted by others, the superimposed photographs are sometimes confusing. In addition, some of the short hand names used for exercises listed in the sample training programs are difficult to match up with particular exercises, and technical terms not familiar to most lay people occasionally creep in. For example, the "hip circuit" listed on page 178 is a bit of a mystery - are these bridges, hip extensions, planks (or "four-point stabilization series"), or something else? What is a "scapula dip" and how does it differ from a regular dip, and indeed, where are dips discussed at all except in a passing reference to dip belts? The same goes for the "scapula push up." Indeed, the book makes the editorial choice of not describing traditional barbell/dumbbell exercises, even those listed in the training programs. Finally, despite the emphasis placed on Olympic lifts and their variants, the book does not even identify and describe either the snatch or the clean and jerk. This may be an editorial decision, given the importance of being taught proper technique before attempting either of these demanding lifts and the fact that the purpose of the book is not train Olympic lifters. However, the book could certainly do a better job explaining the various Olympic variations. The hang clean and close-grip snatch are described, but other variations are not, even those that are mentioned in passing such as the push jerk and the push press. Nevertheless, these are relatively minor criticisms, and I highly recommend this book.