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<ol><li>You're lifting weights. The first time feels easy, but each lift takes more and more effort

until you can't continue. Inside your arms, the muscles responsible for the lifting have become unable to contract. What's going on? Christian Moro explains how exactly our muscles operate, and what causes them to become fatigued.Muscle fatigue is the complete physiological inability to contract. However, fatigue does not normally set in during general exercise. In this case, your muscles are often tired from the exercise. What do you think could be some of the causes of this general tiredness?</li></ol>

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The reason for fatigue could be as simple as... View the full answer

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