Question

why does breathing becomes faster when we do physical exercise?

Answer 1

Answer:breathing become faster when we do physical exercise because more energy and oxygen required to cell to breaking down food .

Explanation:

Answer 2

When we do strenuous physical exercise, breathing becomes faster. This is because the body’s demand for ‘oxygen increases’.  

Explanation:

• During exercise, the muscle stretch and contract at a faster rate which ‘increases their demand’ for oxygen.  

• The heart starts to pump blood at a faster rate to carry oxygen to the ‘different parts of the body’ for their energy requirement.  

• This means, that more oxygen is taken up to meet the energy demand of the body during exercise.

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