Hypokinetic Diseases are poor health related conditions resulting from inactivity or lack of exercise. A number of major studies (e.g., Harvard Alumni study; Dallas Institute of Aerobics Research) conducted with large populations over the past three decades highlight the relationship between physical activity and a decrease in cardivascular related deaths.
Heart attack risk is reduced by as much as 45% in individuals who maintain an active lifestyle (quitting smoking lowers the risk by 70% over five years compared to smokers)
Sources: Hoeger, W. K., & Hoeger, S. A. (1995). Lifetime physical fitness and wellness:
A personalized program (4th ed.). Englewood, CO: Morton.