They re fun too. You will have better cardiovascular health. Your heart is a muscle and becomes stronger and more efficient as you exercise. As you gain fitness, your resting heart rate will drop ten to twenty beats per minute and become a better pump, circulating more blood per beat.
Exercise lowers cholesterol and reduces blood pressure, too.
Reduced body fat means greater muscle mass. Endurance exercise burns calories at an impressive rate. After you have exercised, your body continues to burn calories at an higher rate. That means you re burning more calories than normal for several hours after a workout. Exercise builds muscle mass too and the more muscle you have the more calories you burn all through the day.