Exercise can prevent or even reverse the effects of certain diseases. Exercise lowers blood pressure and cholesterol, which may prevent a heart attack.
In addition, if you exercise, you lower your risk of developing certain types of cancers such as colon and breast cancer. Exercise is also known to help contribute to a sense of confidence and well-being, thus possibly lowering rates of anxiety and depression.
Exercise is helpful for weight loss and maintaining weight loss. Exercise can increase metabolism, or how many calories you burn in a day. It can also help you maintain and increase lean body mass, which also helps increase number of calories you burn each day.