Although this book presents good information about the value of walking, as well as guides to healthy walking, the rest of it is often simplistic or simply wrong. Diet information, while pertinent for the person looking to improve health via exercise and optimum diet, is rather basic and often tedious. Organization is weak, with repetition in several sections, and overgeneralizations are rampant. Excessive liberty is taken in interpreting research studies, and insufficient documentation is provided. Antiaerobic tirades reach the point of being misleading; the author states that ``Injuries and deaths by the thousands have resulted from these awful aerobic acrobatics'' and ``Hundreds of thousands of American suffered either disease, disability or death during the dangerous, debilitating, decadent decade of the jogger.''-- Kenneth G. Tillman, Trenton State Coll., N.J.