The normal value of lung capacity for adult women is between 2500-3000 ml, which is an important indicator of the strength of lung function. The younger you are, the lower your lung capacity will be, and before the age of 20, as you get older, your lung capacity will gradually increase. After the age of 35 years old with the growth of age, lung capacity will also gradually decline, about 10%-15% per year. However, if you exercise regularly, the respiratory muscles are very strong, and the elasticity of the thorax is not weakened, which will also increase lung capacity. So to exercise regularly, improve lung capacity, lung capacity is good, lung function will improve, the body will also get the oxygen needed, will exhale the metabolized carbon dioxide, which is conducive to physical health.