The potentially guided include self-improvers and the merely prudent, gung-he athletes and their tired wives. Wilkinson (football coach and Kennedy adviser on this subject) begins with a disarming recognition that boring exercises will be unsuccessful. His programs aren't all that much fun, but each is designed to get one kind of specimen into preliminary shape for sporting. The key to physical fitness: not muscular strength, but a sound cardiovascular system. Edifying sections on diet and relaxation, a special chapter for women, 43 drawings. Shallow-breathing, taxiriding, anti-perspirant slugs, take heart!