What are the advantages of people who have a high lung capacity?

People have roughly the same lung capacity. But some features of the structure of the body, the presence of bad habits, habitat, diseases, etc., can greatly affect their volume. We need the lungs to oxygenate our blood. If they are small, then noticeably rapid breathing, since accelerated ventilation of the lungs is necessary. Sometimes, due to the small volume of the lungs, there is a lack of oxygen. You can hardly notice this, and sometimes you can feel constant fatigue, headache, muscle pain, frequent heartbeats. Therefore, people with normal lung size have a great advantage.