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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.
For boys, puberty usually begins around the age of 12 but can start as early as age 9. During puberty, hormones and chemicals are released into the body, which can result in psychological changes. These may include: 1  Mood Swings.  Tiredness.