Multiple choice

Why does a man at rest breathe at a slower rate as compared to a man running?

  1. The organs of a man at rest are also at rest. Hence, breathing is also slow.

  2. As he is resting, he is not aware of breathing.

  3. A man at rest has low energy as compared to a man who is running and hence, he cannot exhale and inhale quickly.

  4. A man, who is sleeping, does not require more of oxygen. Hence, he breathes at a normal rate.

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Yes, it is correct. The rate of breathing increases when we do strenuous physical work like running. But when we are at rest, our breathing is normal.

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