Maximum heart rate is the ultimate heart rate that the heart can reach during exercise. The maximum heart rate is based on a person’s age and is equal to 220 minus their age. For example, if a person’s age is 30, their maximum heart rate for exercise is 190 beats per minute. It is not recommended to reach the maximum heart rate for regular exercise, it is risky. Aerobic heart rate is recommended for regular exercise. Aerobic heart rate is 65%-85% of the maximum heart rate. Recommended 3-5 times a week of aerobic exercise, each aerobic exercise lasts 40-50 minutes is appropriate. Aerobic exercise is good for cardiorespiratory function. However, for people with chronic diseases such as coronary heart disease, aerobic exercise is also not recommended, and may induce an acute attack of the disease.