why does the rate of heartbeat increase after heavy exercise?
Answers
Answered by
1
Answer:
BECAUSE YOU BODY NEED MORE OXYGEN TO WORK .
Answered by
4
Explanation:
DURING HEAVY EXERCISE OUR BODY NEEDS
MORE ENERGY.
OUR HEART HAS TO supply more oxygenated blood through rapid contractions and expansion of atrium and ventricles
so......
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