After exercise a person keeps breathing deeply. Which is the best explanation?
Answer and explanation
Correct answer: C. Extra oxygen is needed to break down the lactic acid that built up
- Step 1: During hard exercise the body builds up an oxygen debt. Step 2. Oxygen is needed to remove the lactic acid. Answer: Extra oxygen is needed to break down the lactic acid that built up. Why not the others: Lactic acid is oxidised, not built up.
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