How to Calculate Your Fat Burning Cardio Zone

When exercising at different intensity levels, your body uses different energy sources. One way to measure your exertion level is to use your heart rate. If you are targeting burning fat, you want to have your heart rate fall in the fat burning heart rate zone, which is between 60 and 70 percent of your maximum heart rate. In order to find your fat burning zone, you need to know your maximum heart rate.