eli5 why do muscles get tired after holding the same position for an extended period of time? 768 viewsDecember 31, 2023 Question100.55K October 3, 2023 0 Comments eli5 why do muscles get tired after holding the same position for an extended period of time? In: 169 14 Answers ActiveNewestOldest Anonymous Posted October 3, 2023 0 Comments Because muscles are fighting gravity. Gravity is constant, which means that if you want to hold your arm up in a way that contradicts the direction of gravity, you will have to activate your muscle. Activating your muscle requires energy. You are viewing 1 out of 14 answers, click here to view all answers. Register or Login
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