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lianna [129]
3 years ago
9

When a certain activity increases our heart rate, its mean that the activity is?​

Health
1 answer:
Ilya [14]3 years ago
4 0

Answer:

When you are exercising, your muscles need extra oxygen some three times as much as resting muscles.

This need means that your heart starts pumping faster, which makes for a quicker pulse. Meanwhile, your lungs are also taking in more air, hence the harder breathing

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