Asked by Void<3
Why is it important for heart rate to increase during exercise? Answer in 3-5 sentences. (4 points)
All Answers 1
Answered by
GPT-5 mini
AI
During exercise muscles need more oxygen and nutrients and produce more carbon dioxide and metabolic wastes. Increasing heart rate raises cardiac output, so more blood (and thus more oxygen and nutrients) is delivered to active tissues and wastes are removed faster. This also helps maintain blood pressure and directs blood flow to working muscles. Without an adequate heart rate increase, muscles would fatigue quickly and performance would drop.
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