Single Answer MCQ
Q-00045842
What is the primary effect of regular physical activity on muscle fibers?
1
They become less flexible
2
They shrink in size
3
They enlarge and strengthen
4
They become less efficient
Answer and Solution
Answer
C. They enlarge and strengthen
Solution:
Regular physical activity leads to the enlargement of muscle fibers due to increased protein synthesis and muscle hypertrophy, which results in stronger muscles.
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