Arterial disease is the most serious health problem in the modern world. Isn't it curious, that with all this talk about including exercise in our life style, nowhere is there an explanation of how aerobic exercise prevents the buildup of cholesterol and hardening of the arteries? Many books describe the improved arterial profile resulting from aerobics. Extensive research has made it clear that exercise is extremely beneficial. Unfortunately, the actual cause-and-effect chain has not been understood. In this book the information unfolds by way of a conversation between three human entities, The Mental, The Physical, and The Emotional. Revealed through their discussion are the reasons why a lack of aerobic exercise is to blame for hardening of the arteries, the development of excessive cholesterol on the inside walls of arteries, and weak collateral circulation. As a physical educator, the author spent thirty-seven years teaching the aerobic preventive approach to arterial difficulties. He says, "We are talking about a muscle system that has been weakened by the inactivity of modern technology." This will be the first published explanation of how aerobics actually influences the inside diameter of arteries. The projected readership will be physical educators, the medical community, athletes, and everyone possessing arteries. This fresh approach has no rival and represents a genuine advance in the prevention of arterial disease. We are not what we eat, but rather we are what we do.