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scoray [572]
2 years ago
12

During physical activity, your muscles are constantly working. The longer and the harder

Health
2 answers:
Semenov [28]2 years ago
7 0

Answer:

Heart and Lungs

Explanation:

I hope this helped ya

Lelu [443]2 years ago
3 0

Answer:

Heart and lungs

Explanation:

The more harder that you work the more your heart is going to race and the more your lungs are going to get tighter because they are working together to make the body function the way it is supposed to

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