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A 40-year-old member asked:

At what usual age in puberty do boys' muscles get bigger?

1 doctor answer3 doctors weighed in
Dr. Patricia Harkins
Developmental and Behavioral Pediatrics 33 years experience
Early: As soon as testosterone increases, muscle mass starts to increase.
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Dr. Sudhir Bansal
Internal Medicine - Endocrinology 77 years experience
Boys start around 12 years old
Aug 16, 2013
Last updated Aug 17, 2013


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