Park? this question makes no sense because none of the given answers are a food establishment.
The lungs recoil to force the air out of the lungs. The intercostal muscles relax, returning the chest wall to its original position. The diaphragm also relaxes, moving higher into the thoracic cavity.
(D) The waste (amino acids) build up in your muscles after prolonged use, and causes that burning sensation.
A: Wrong - Carbon Dioxide is the waste product of your body intaking oxygen, and is painless.
B: Wrong - Your body does not produce or ferment alcohol.
C: Wrong - Your body does not produce oxygen, it's consumed.
Physical activity can prevent a heart attack because you're increasing your blood flow through your body. You're also making you cholesterol ratio between you "good and bad" cholesterol balance out. Example, if you have a high "bad cholesterol" (LDL level) and a high "good cholesterol" (HDL level), the exercising will help increase your HDL levels and lower your LDL cholesterol.
Also, a lot of people don't realize that the younger you are and have a heart attack, the LEAST likely you will survive. This is opposite of a normal idiopathy.
The younger we are, the less "added pathways" our veins/arteries have within our heart. Exercising can actually create these additional pathways within our heart to held reduce the risk of a heart attack and if someone does have a heart attack, they have addition pathways for blood to flow and less of the heart muscle will die.
Parents, friends, teachers, and counselors
