Question

what happens to the rate of breathing during vigorous exercise and why​

Answer 1

Answer:

The body needs more energy and therefore more oxygen to produce energy

Explanation:

Answer 2

at the time of heavy exercise we need more amount of energy to perform the work that exercise so our rate of breathing increase then we perform external respiration but in case no more energy store in thecell so our rate of respiration increase energy store in the form of ATP in cell.