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Though boys typically begin puberty between the ages of 9-14 (commonly ends at the ages between 16-18) and the changes of puberty follow a pattern, every boy develops at his own pace. If you want to know if you have hit puberty, just follow these steps.
1 Boys usually start to show the physical changes of puberty between the ages of 11 and 14, which is slightly older than when girls start puberty. 2  The male sex hormone called testosterone and other hormones cause the physical changes. 3  A boyâs brain is maturing while his body is changing.