Myocardial infarction is related to insufficient blood perfusion within the heart, insufficient oxygen supply to the myocardium, and increased oxygen consumption, etc. Patients should exercise appropriately, and the type of exercise should be formulated specifically according to medical advice. 1. Causes: Coronary atherosclerosis, coronary artery spasm and other factors can lead to insufficient blood perfusion in the heart, causing myocardial ischemia, resulting in myocardial infarction; severe anemia, low blood pressure and so on can lead to insufficient oxygen supply to the myocardium, resulting in myocardial infarction; persistent tachyarrhythmia, severe hypertension and so on can lead to an increase in the myocardial consumption of oxygen, resulting in the occurrence of myocardial infarction. 2. Exercise methods: myocardial infarction patients can also choose appropriate intensity of aerobic exercise after recovery, such as walking, jogging, cycling, etc., to be gradual exercise. Specific types of exercise are recommended according to medical advice. Myocardial infarction patients, please timely hospital consultation, active treatment, and under the guidance of the doctor to choose the appropriate exercise methods.