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2 votes
So why does our heart beat faster when we exercise?

How about muscle cramps?

2 Answers

5 votes

Answer:

Our heart beats faster because we are making our bodies work harder, and faster.

answered
User John Severinson
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8.5k points
3 votes

Answer:

during exercise, your body may need three or four times your normal cardiac output, because your muscles need more oxygen when you exert yourself. During exercise, your heart typically beats faster so that more blood gets out to your body.

Step-by-step explanation:

answered
User Chit Khine
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7.8k points

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