Biology for IGCSE & O level - Respiration (Section 1 - No. 28)
What is the main reason for breathing heavily after a period of intense exercise?
To supply the extra oxygen needed to convert lactic acid back into glucose.
To replenish carbon dioxide lost during exercise.
To provide more glucose to the muscles.
To cool down the body.
Explanation
Heavy breathing after exercise provides oxygen to remove lactic acid and restore energy stores.
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