Resistance training to increase muscular strength will help to prevent injury and build strong bones. It may also contribute to better balance, coordination, and agility that may help prevent falls in the elderly. Flexibility exercises will help keep muscles supple, thus allowing joints to maintain full range of motion. Good flexibility will also help to prevent muscle strains and tears. Physical activity carries risks as well as benefits.
Musculoskeletal injuries are the most common form of injuries that occur from exercise and activity.
These injuries are usually mild, though participation in sports will increase the risk of more serious injury. A more serious but rare complication is sudden cardiac death. Overall, the risks of physical activity and exercise are very low compared with the health benefits. You are a male over 40 or a female over 50 with multiple cardiovascular risk factors. Your doctor said you have a heart condition and recommended only supervised physical activity.