I grew until I was 22, very slowly. I measured 8.5x6 when I was 18, 19, and 20, so I thought that was it, stopped measuring. Measured again at 22 and was shocked that I grew a half inch in length and a quarter inch in girth. I jelqed for a time period in there but not really seriously, but the way I masturbated sorta changed to a kinda jelq so maybe that helped.