1. Exercise can regulate metabolic function, and promoting lipolytic muscle exercise can improve the regulation of metabolism by neuroendocrine system. Muscle exercise needs a lot of energy, short-term strenuous exercise is mainly provided by sugar oxidation, and long-term moderate-intensity exercise is mainly provided by fat oxidation. During exercise, muscles enhance the uptake and utilization of free fatty acids in blood, and blood accelerates the release of free fatty acids from fat cells to be supplemented, resulting in body fat loss and weight loss. Muscle exercise can also improve the utilization rate of glucose in blood, prevent excess sugar from being converted into fat and reduce the formation of fat. The reduction of body fat can avoid the complications of heart, blood vessels, liver and other solid organs caused by fat deposition.

2. Exercise can lower blood fat. Exercise can improve the activity of lipoprotein tyrosinase in adipose tissue to some extent and accelerate the decomposition of chyle rich in triglycerides and very low density lipoprotein, so it can reduce the content of blood lipids, especially triglycerides. Exercise can increase the content of high-density lipoprotein cholesterol in blood, promote the cholesterol deposited in cells to be transported out of the arterial wall, improve the activity of phospholipase-cholesterol acyltransferase, and promote the function of high-density lipoprotein transporting cholesterol in cells. Therefore, exercise can not only reduce the amount of blood lipid, but also change the quality of blood lipid, so that it has the ability to resist atherosclerosis.

3. Exercise can improve cardiopulmonary function and physical endurance. Obese people often have corresponding cardiac insufficiency, and their heartbeat will accelerate with a little activity. Exercise can gradually strengthen myocardial contraction, improve heart function, increase the elasticity of blood vessels and the power of blood circulation. Exercise can also improve the extra-cardiac dynamic factors of blood circulation, such as accelerating the return of peripheral blood to the heart, thus reducing the burden on the heart, improving the adaptability of the heart to human activities, and thus improving the tolerance to physical activities. In addition, obese people often have relative respiratory insufficiency, and asthma often occurs when they start exercising. Exercise, especially breathing exercise, can increase the range of motion of the thorax and diaphragm, deepen breathing and improve the ventilation function of the lungs.