Your doctor will develop an exercise prescription that is appropriate for your age, condition, and lifestyle to make it safer and more effective for you to participate in exercise. Exercise prescriptions usually include exercise intensity, exercise frequency, exercise duration and exercise type. Exercise intensity: The intensity of exercise can be adjusted in several ways. 1. Target heart rate: It is the heart rate to be achieved by exercise. When exercising, the heart rate increases to meet muscle demand for oxygen, and the more vigorous the exercise, the faster the heart rate will be. You can adjust the intensity of exercise according to the target heart rate set by the exercise prescription, if the heart rate is lower than the target heart rate, you can slowly increase the speed and intensity, so as to ensure the effectiveness and safety of exercise. However, for heart patients, some medications can affect the heart rate, such as beta-blockers, calcium channel blockers, digoxin and cortisone. 2. Talk: Exercise makes you breathe deeper and faster than usual, but you should not feel shortness of breath. When you are exercising make sure you can maintain a normal speed of conversation. 3.Self-perceived exertion level: self-perceived exertion scoring method (RPE) from low to high into 6 to 20 levels (see the table below), self-measured exertion level, the patient generally choose 13 to 14 levels, that is, the exercise feels slightly hard and hard, but should not feel very hard. 4, metabolic equivalent method: exercise cardiopulmonary function measurement can develop the appropriate metabolic equivalents (METs) at the current stage. 5, pay attention to the physical response during and after training, to the evening of the day after exercise and the next morning still feel good is appropriate. Exercise time: At first, you may only exercise for 5-10 minutes at a time, but as your heart function recovers, you can exercise for 30 minutes or longer. After the duration of exercise increases to at least 30 minutes at a time, then increase the intensity of exercise. Frequency of exercise: The heart will only benefit from regular exercise. You should exercise 3 to 5 days a week, preferably once in the morning and once in the afternoon, and then you can increase to exercising every day. Type of exercise: Choose according to the following points: 1. choose the exercise you like to do; 2. preferably aerobic exercise, i.e. exercise for the large muscle groups of the lower limbs and upper arms, such as walking, jogging, cycling or swimming; 3. be able to do at least 10 minutes or more of exercise continuously without discomfort; 4. such exercise is safe and really beneficial for the heart; 5. exercise that can be maintained for a long time. Walking exercise is a form of exercise that meets the above requirements. You can do it at any time and adjust the speed at any time, and most people are able to keep it up for a long time. Therefore, walking is the best choice of exercise for heart patients after discharge from the hospital.