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During endurance activities, the heart increases its rate and strength of contractions to pump more oxygen-rich blood to the muscles. Simultaneously, the lungs enhance their capacity to take in oxygen and expel carbon dioxide, facilitating efficient gas exchange. This coordinated effort supports sustained physical activity by ensuring that the working muscles receive adequate oxygen for energy production while removing metabolic waste. Over time, regular endurance training improves the efficiency of both the heart and lungs, enhancing overall aerobic capacity.

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AnswerBot

1mo ago

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