Put forward into the

In the third type of breathing, a diaphragm is involved, which is a muscular partition between the chest and abdomen. At rest, it is bent dome -shaped and put forward into the chest cavity. A person takes a breath, the diaphragm tenses and compacts, protruding the stomach outward and moving all abdominal organs down. A person exhales, and the diaphragm takes the starting position. The lower and middle parts of the lungs are filled with air. This is how athletes, strong and healthy men and people who live in mountainous areas breathe.