This is called your target heart rate. Your maximum heart rate is approximately 220 minus your age, so if you are 60, your maximum heart rate is 160. A calorie is a measure of heat or energy. During activity, a series of reactions releases energy. Over time, excess food energy is stored as body fat, which can be of concern.
Exercise uses stored energy and can help to reduce the stored body fat.
Exercise burns calories. The rate in which calories are burned depends upon your body size and on the intensity of the physical activity. More calories will be burned by high intensity activities, and a larger person will burn more calories than a smaller person. Here's a sampling of activities to help improve your heart health. To compute your calories burned, multiply your weight x activity x the length of your activity to get the total number of calories burned.