SMR 3 is the time when the testes get clearly larger, the penis gets noticeably longer then thicker in SMR 4and the pubic hair though still small in amount gets darker and starts to curl. I am not Dr. At 12, you are likely still developing, but to check to see if you are in the average size range for your stage of developmentyou must measure the average stretched lengthnot the erect length. I am 8 years old and i hit puberty earlier than most people and my penis is also larger than the average for my age. Mule is has not started noticeably growing yet. Arron, Thanks for writing in.
This would be a great time to have a physical exam from your pediatrician.
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You can follow this length to find out how to measure the stretched length of the penis. It would be appropriate to bring this up with your pediatrician or a pediatric urologist. This is of course, not to be confused with summer penile syndrome, where men suffer with itchy, painful bites on their genitals. Hi, im 15 yrs old. The penile average is just numbers.