right now i couldnt curl a 30 pound dumbell 5 times but if i trained for a year i could, how?
In: Biology
Each muscle fiber has a set amount of strength it can pull. Exercising often tells the body that you need more muscle fibers, so the body produces more. The fibers don’t get stronger, you just have more fibers that can pull.
Like tug a war, adding more people helps your team win
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