1, whether you can burn fat in aerobic exercise mainly depends on your heart rate. Generally, when the exercise heart rate reaches 70%-80% of the maximum heart rate, the body will use fat to provide energy for exercise, which is the fat burning area of exercise.

2, walking for half an hour, it is impossible to let the heart rate enter the fat burning area. During this period, the exercise body uses the original ability provided by sugar and will not consume fat at all. The second half hour of running also depends on the speed. If the speed is too slow, the heart rate will not enter the fat burning area and will not consume fat. Therefore, the order of running first is not helpful to lose fat at all.

3. Instead of walking fast, it is better to run directly and maintain a high speed, so that the heart rate can quickly meet the requirements of burning fat. The longer the storage time, the better the fat reduction effect.