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myrzilka [38]
3 years ago
10

How do muscels become bigger? Describe what is happening to the muscle fibers over time?​

Biology
1 answer:
Gnom [1K]3 years ago
6 0

Answer:

When people lift weights, microscopic damage (microtears) occurs to the myofibrils within the muscle fiber. These microtears stimulate the body's repair response. ... The increased number of myofibrils causes muscle fibers to enlarge, increasing their volume and size.

Explanation:

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