How to Calculate Your Fat Burning Zone

The highly disputed "fat burning zone" refers to the target heart rate range that is supposed to help a person lose weight faster. During low-intensity but longer workouts, about 60 percent of the calories you burn come from fat rather than carbohydrates. During high-intensity workouts, only about 35 percent of calories burned come from fat. According to Cedric X. Bryant, Ph.D., chief exercise physiologist for the American Council on Exercise in San Diego, "Low-intensity workouts do promote fat loss ... You just have to do them for a longer period of time." 
For the body's health, alternating between low-intensity and high-intensity workouts will allow for recovery and optimal health as well as promote weight loss distributed in a way that would please most people. Jeffrey R. Stout, who has a Ph.D. in exercise physiology, explains it simply stated, "sprinters have that muscle on muscle look, while the average treadmill walker has skinny arms and a gut? It's simple. When you sprint, you use your muscles to such a powerful extent, they respond by growing bigger and stronger." So the fat burning zone combined with exercises of higher intensities will result in the results most people are trying to achieve