A 40-year-old member asked:

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

1 doctor answer • 3 doctors weighed in

Dr. Patricia Harkinsanswered

Developmental and Behavioral Pediatrics 33 years experience

Early: As soon as testosterone increases, muscle mass starts to increase.

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4.9k viewsReviewed >2 years ago

Dr. James Ferguson

Dr. James Ferguson agrees1 doctor agrees

Dr. Sudhir Bansal commented

Internal Medicine - Endocrinology 77 years experience

Boys start around 12 years old

Aug 16, 2013

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