The diaphragm, next time just google it lol
<span>True, because many people are competitive by nature, so they need the challenge of a good competition in order to feel motivated to do the physical activity. If there is no competition, they don't feel compelled to engage in any physical activity. That's why those people tend to choose team sports or other activities in which they have to compete against other participants.</span>
According to me he should choose Running in a 5K race, because when we run our lungs need much more air.
Pelvic inflammtory disease.
Hope this helps
