When aerobic exercise, the highest heart rate a person can achieve is 220 minus age, and it is recommended to keep the heart rate at about 60%-80% of the maximum heart rate during aerobic exercise. For a normal adult, the heart rate is maintained at 140-160 beats per minute, and the intensity of exercise at this time is more suitable for weight loss and cardiorespiratory fitness. The increase in heart rate during aerobic exercise is equivalent to the degree of sympathetic excitement, which is conducive to promoting fat metabolism, and can also enhance the function of the heart and lungs. However, it should be noted that if you have cardiopulmonary disease, or ischemic, hypoxic disease, to reduce the heart rate during aerobic exercise, because the heart rate accelerates during aerobic exercise, may increase the risk of myocardial ischemia.