Appropriate physical activity (including physical activity and physical labor) can be fitness and disease prevention, prolong life; while people with little physical activity are generally weak and prone to various diseases. This is a well-known common sense. So what is the relationship between physical activity and coronary heart disease? Research studies have shown that the incidence of coronary heart disease is 2.5-4 times higher in people who are less physically active than in those who exercise regularly. Research results also show that longer, more moderate movements of the exercise program (such as walking, jogging, etc.), can significantly reduce blood cholesterol levels; while a short period of time, the intensity of strenuous exercise program (such as boxing, wrestling, etc.) will be blood lipid effect is not obvious. The reason why appropriate physical activity can lower blood lipids and prevent atherosclerosis is this: 1. Appropriate physical activity can improve the body’s lipid metabolism function. Some research results show that regular exercise can make plasma high-density lipoprotein (anti-atherosclerotic lipoprotein) levels rise, very low-density lipoprotein, low-density lipoprotein (both for the atherosclerosis-causing lipoproteins) levels decrease, so that less likely to occur atherosclerosis; and infrequent exercise, it is the opposite, plasma very low-density lipoprotein, low-density lipoprotein levels rise, and high-density The level of plasma very low-density lipoprotein and low-density lipoprotein increases, while the level of high-density lipoprotein decreases, which is more prone to atherosclerosis. 2, appropriate physical activity can consume excess calories, to avoid excessive calories into fat, thereby reducing blood lipids. The reduction of blood fat can improve the dissolving activity of fibrin in the blood and prevent platelet aggregation and thrombus formation. 3, appropriate physical activity helps to reduce blood pressure, so that adrenaline activity is reduced, reducing the occurrence of serious arrhythmia, so that the possibility of sudden death due to ventricular fibrillation is reduced. 4, appropriate physical activity can also make the microvascular expansion, help to establish the left and right coronary artery branches between the collateral circulation. This improves the coronary system’s ability to compensate for coronary lesions. Therefore, in order to reduce or prevent the occurrence of atherosclerosis and coronary heart disease, non-physical laborers, especially those who are engaged in mental labor, should often participate in some physical labor and physical exercise. For mental laborers, appropriate physical activities not only have the above effects, but also help reduce mental stress, relax the nerves and recover from fatigue.