Generally speaking, you can directly improve your immunity through exercise. Exercise can also increase energy consumption and reduce body fat. Exercise can reduce the resistance of peripheral blood vessels, lower blood pressure and maintain normal blood pressure. Exercise is good for blood pressure and has a good influence on cardiovascular and cerebrovascular systems.

Exercise can also indirectly improve the body's immunity. Exercise can also enhance the five qualities of the body, that is, cardiopulmonary endurance, body composition, muscle strength, muscle endurance and flexibility, which is helpful to reduce a variety of non-communicable diseases, especially cardiovascular and cerebrovascular diseases. Exercise can also improve mental state and help to eliminate anxiety. Because the resistance will drop when you are anxious, reducing psychological stress will improve your resistance. Exercise can also increase muscles. Exercise itself can reduce serum insulin, enhance insulin sensitivity and ensure normal glucose metabolism, because with the increase of blood sugar, resistance will decrease. Improving insulin resistance through exercise is helpful to improve resistance. Exercise can form good living habits, and good living habits are also conducive to improving the body's immune function.