Question

why does our heart beat faster when we exercise or workout

please short and for class 3
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Answer 1

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.

Answer 2

Answer:

During exercise, your heart naturally beats faster to supply more oxygen-rich blood to your muscles. The more intensely you exercise, the faster your heart rate, as well as your respiration.