When you exercise your body / muscles are doing extra work. They therefore require more oxygen for the cells. The body compensates this by increasing the cardiac output so that your heart pumps more blood and the breathing rate increases to supply more oxygen to the circulating blood. This is the cause of heavy breathing when running or exercising.
breathe heavily = gasp, huffing and puffing, breathing, labored breathing, hyperventilation
because of oxygen,nitrogen
Pant.
I don't really know
no
It keeps you warm from the constant moving of the body. Because your body is always moving, your heart pumps out blood and the blood is always warm. Your heart is also a muscle so it pumps the warm blood to the muscles because they are constantly working and when you excercise or your muscles get tired because of the buildup of lactic acid in your muscles. That is why you breathe heavily when you excercise, to keep the blood and oxygen flowing enough for your muscles.
Jesse breathed heavily after running around the bases>
Heavy breathing can be a sign of many things, including that she may be in labor and ready to have her foal. Heavy breathing most commonly means the horse is uncomfortable or has exercised heavily. Mares who are in labor will breathe heavily. Mares who have a foal inside them that is in an awkward position will also be uncomfortable and sometimes breathe heavily.
Because they are tired ...
If she begins to breathe heavily and has a big stomach, eats alot and runs on the wheel also!
everyone and everything breaths heavy in their sleep
Which spelling you use depends on which part of speech you're using--"breathe" is for the verb, "breath" is the noun. So you breathe heavily after a ten-mile run, but your breath fogs up the window on a cold day.