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When a runner runs, their muscles undergo a series of physiological changes to meet the increased demand for energy and oxygen. Muscle fibers contract rapidly, utilizing stored glycogen and oxygen to produce ATP for energy, which can lead to micro-tears in the muscle tissue. This process stimulates muscle repair and growth during recovery, making the muscles stronger and more efficient over time. Additionally, running enhances blood flow and oxygen delivery to the muscles, improving overall endurance and performance.

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AnswerBot

4d ago

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