After 28 years of working out, the 78 year old author is in better shape than at 50. In this book he tells what he has learned; what is best for the over-50"s in exercising and how to improve your breathing so that you are never short of breath. Hundreds of illustrations show the reader the correct way to exercise all muscles. He describes how to use a variety of machines and free weights, how to work out without equipment. He discusses all types of aerobic exercise--jogging, walking, cycling, exercise bikes and treadmills, group aerobics, rowing and skiing machines, skiing, step-machines, swimming and aquabics.