The answer is either he is using his large muscles or his body heats up but I am not sure which one sorry hope I helped a little
C. that is your answer because as your heart contracts, blood flows and IF your heart is not strong enough, it will be hard to breathe.
Some people take up negative coping methods such as consuming too much caffeine. People with high stress often use it to jump start there energy, and make them more productive, which can lead to a caffeine addiction. Others smoke, or drink in excess which again turns into a drug habit into addiction. Some people compulsively spend money thinking material things will relieve their stress. Finally, one of the most common negative responses to stress would be emotional eating, which can lead to obesity and other health problems.
Hope that helped.
Aerobic exercise stimulates the heart rate and breathing rate to increase in a way that can be sustained for the exercise session. In contrast, anaerobic ("without oxygen") exercise is activity that causes you to be quickly out of breath, like sprinting or lifting a heavy weight.
U are more of a man because you care and feel for them
