I think it might be d. the lungs expand and contract which increases the rate of blood flow so the muscles can convert and store energy
A.) Valves, that’s the right answer
I would say Push up's for your answer because of balance.
Correct answer choice is :
2) EPOC
Explanation:
The additional oxygen one gets while still breathing hard after finishing the exercise. While exercising, lactic acid forms up after the saved glycogen in your tissues are used up. It makes up in your tissues. It is what makes your tissues burn. Its development is what makes your tissues tire and give out.
