Aerobic exercise, which can reduce weight and prevent obesity, affect glucose and lipid metabolism, and relieve tension, is important for primary and secondary prevention of cardiovascular disease. Patients after coronary heart disease stent implantation can not be nervous about the effect of exercise on the stent. Because interventional stents are generally made of stainless steel alloys, which are highly supportive, corrosion-resistant and shape-shifting, they generally do not rust or collapse. During surgery, the high pressure given during stent expansion causes the stent to be tightly embedded in the coronary artery wall, so it will not generally displace or fall out. Exercise rehabilitation after stenting can reduce postoperative stenosis of the recanalized vessels, increase self-confidence, eliminate tension, and speed up the recovery of the disease. At the same time, it can reduce platelet aggregation, increase fibrinolysis, prevent re-infarction, and also improve heart function, enhance physical fitness and improve quality of life. What should patients after stenting pay attention to when exercising? First, you can learn exercises suitable for you under the guidance of a cardiac rehabilitation doctor, and it is best to start exercising under cardiac monitoring. The doctor will develop an exercise prescription tailored to each patient’s own cardiopulmonary function, exercise capacity, and muscle and joint conditions through an accurate assessment, giving each patient detailed advice and guidance on the form of exercise, frequency, intensity, duration, and monitoring methods to ensure exercise safety. Through about 10 sessions of instruction (1-2 hours each time), patients can properly grasp the standardized, reasonable and effective exercise treatment methods that are suitable for them, so that they can fully reap the health benefits of exercise. Secondly, the exercise should be performed at an interval where the self feels slightly tired, following the principle of gradual progress in several stages: warm-up period, exercise period and recovery period. In addition, patients should avoid strenuous exercise or confrontational competitive sports such as soccer games and boxing, and if they have heart discomfort such as chest tightness during exercise, the exercise should be suspended and evaluated. Patients after cardiac stent implantation are also reminded that cardiac stenting is only a medical treatment and the main cause of arterial stenosis is atherosclerosis. Therefore, while actively carrying out cardiac rehabilitation and moderate exercise, it is important to pay attention to a light diet, reduce fat and salt in the diet, prohibit smoking and limit alcohol, and control hypertension, diabetes and hyperlipidemia in order to ensure health at the root. The effect of exercise on normal cardiovascular function Regular physical exercise and exercise training can make the human cardiovascular system form, function and regulation ability to produce good adaptation. Longer-term training can slow down the heart rate at quiet times, due to the strengthening of the vagus nerve function that controls the heart. Training can lead to adaptations in the heart, such as strength training that increases the number of contractile components in the muscle fibers and thickens the individual myogenic fibers, which increases the contractile and diastolic capacity of the heart muscle and speeds it up; endurance training increases the ventricular volume. Therefore, training can increase the overall cardiac reserve. In addition, after training, the ATPase activity in myocardial fibers increases; the storage, release and uptake of Ca2+ by the myocardial sarcoplasmic reticulum increases; the function of mitochondria and cell membrane improves, the rate of ATP resynthesis increases, and the coronary artery blood supply is good. The ability of myocardium to tolerate ischemia and hypoxia is improved. Effects of exercise on cardiovascular disease Low-intensity aerobic exercise reduces blood pressure in mild essential hypertension, elevates endothelium-dependent diastolic function in the brachial artery, and improves endothelial function. Aerobic exercise reduces risk factors for the development of type 2 diabetes, decreases morbidity, improves glucose and lipid metabolism, and increases INS sensitivity and cardiovascular function. The American College of Sports Medicine guidelines consider large muscle groups involved, power-based, rhythmic aerobic exercise as the primary method for weight loss, recommending people to exercise for 30 min at a time, 5 d per week, and this exercise regimen is believed to reduce health-related problems such as obesity and cardiovascular disease. Exercise rehabilitation for patients with chronic heart failure (CHF) can improve cardiac function, reduce medical costs and rehospitalization rates, restore work capacity, extend life expectancy, and improve quality of life. Patients with CHF who are trained with appropriate exercise therapy can receive significant rehabilitation effects, including relief of mental depression, reduced reoccurrence and mortality rates, and increased return to work. It was found that systematic rehabilitation training for patients who received post-interventional therapy resulted in significant increase in physical strength and work capacity, improved blood supply to the ischemic myocardium, lower triglyceride levels and increased HDL-cholesterol ratio due to regular aerobic exercise and proper dietary control in patients with coronary artery disease. However, the rehabilitation of coronary heart patients should be controlled within the scope of aerobic exercise. In addition, regular aerobic exercise can improve autonomic balance and reduce the incidence of cardiovascular disease, mortality, is conducive to improving the coronary circulation of the exercising heart, enhancing myocardial contractility, increasing cardiac output, and has a protective effect on myocardial hypoxia. Long-term appropriate aerobic exercise can reduce a series of risk factors associated with cardiovascular disease by reducing body weight, improving glucolipid metabolism, improving neural balance, improving insulin sensitivity, enhancing vascular endothelial function, improving blood flow status, etc., and reducing the incidence. At the same time, aerobic rehabilitation exercise treatment for established cardiovascular diseases can reduce the death rate, improve cardiac function and improve the quality of life. Therefore, aerobic exercise has an important role in the primary prevention and secondary prevention of cardiovascular disease. Because of the preventive and rehabilitative benefits of regular aerobic exercise, it has been used in many countries for primary and secondary prevention of cardiovascular disease.