An oxygen debt is incurred when a person is engaged in

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An oxygen debt occurs when a person performs anaerobic exercise, which is characterized by intense, short bursts of activity that cannot be sustained for long periods without the buildup of lactic acid. During anaerobic exercise, the body does not have enough oxygen to produce energy through aerobic metabolism, so it must rely on other energy sources. When these sources are used up, lactic acid builds up in the muscles, leading to fatigue and the need for additional oxygen to repay the debt.

An Oxygen Debt Is Incurred When a Person Is Engaged