Abstract
Constantly decreasing physical activity, particularly among men, is still largely unrecognized as a factor contributing to obesity and coronary arteriosclerosis. Since 1900, physical activity has decreased at a faster rate than caloric intake, with a resulting increase in obesity. Studies have shown that exercise favorably affects the course of coronary artery disease by delaying its progression or stimulating collateral circulation, or both. Physicians should recommend increased activity with detailed prescriptions and periodically observe cardiovascular function before and after exercise.