If your heart is not strong enough or efficient enough, it is difficult to: A. stretch
B. lift weights
C. breathe
D. perspire

C.

Explanation:

When your heart isn't strong enough, you have a hard time breathing because you heart isn't pump blood fast enough to allow you to breathe.

do you think i can get some details

jomady. when the body perspires due to the temperature rising, trepidation, exercise, or a disease known as hyperhidrosis, then you would lose the sodium and potassium stored in your body, also known as the na+/k+-atpase enzyme.