What part of the body did you exercise or overload when performing cardiovascular fitness exercises such as the one-mile run?

The legs are the parts of the body that are exercised or overloaded when performing cardiovascular fitness exercises such as the one-mile run. Cardio exercises affect many parts and systems of the body, such as the muscles and bones (especially in the legs), the circulatory system (makes the heart stronger) and the respiratory system (makes the lungs healthier).