If you have exercised very vigorously and are breathing very hard, your tidal volume has increased, but your inspiratory and expiratory reserve volume has decreased.

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This is because during vigorous exercise, the body needs to take in more oxygen and get rid of more carbon dioxide, so the tidal volume increases to facilitate this. However, the inspiratory and expiratory reserve volumes decrease because the body is working at its maximum capacity and is unable to increase the volume of air intake or release beyond what is necessary for the exercise.

If You Have Exercised Very Vigorously and Are Breathing Very