I bought this book, expecting to learn of exercises, the proper techniques for each (and recommended sets and reps), and what, specifically, a particular exercise would do for my body, but I was disappointed.
After reading the first 75 pages or so, and feeling like I was reading a friendly version of a college textbook, I started flipping ahead to find the explained and diagrammed exercises for different parts of the body. Nothing. I was not expecting lessons in biochemistry (or whatever). I wasn't wanting lessons about adipose, lactic acid, proteins, glucose, etc., etc. The title says "Smart Exercise," and so I believed the book would describe the proper way to do common and complex exercises the smart way, and not with the flawed techniques so many demonstrate out of ignorance. I expected, perhaps, recommended exercise equipment. Nothing.
I guess I'm just the type of person who trusts results. If an exercise is tried and true, I do not need or care to know the science behind it. Just tell me how to do it properly, and I'll be on my way.