Exercise makes out body Healthy Wealthy and wise If we do regular exercise then several beneficial effects on your body that can improve the function of your musculoskeletal system, your cardiovascular system, your respiratory system, your metabolism, and even your brain. Busy in regular exercise significantly reduces your odds of developing heart disease, diabetes, kidney disease, lung disease, and some kinds of cancer. People who exercise live longer, and (possibly more importantly), suffer fewer of the chronic illnesses and infirmities that often make old age difficult.