Hello, I have a 16 year old younger brother who is starting to become sexually active. I have talk him about penis size and about how 5.5 inches in length isn’t small, its average. He been wondering about how he can increase the size of his penis, but I’m not sure if I should expose him to the world of penis enlargement or not. Although he is still in puberty and I don’t know if this is the time in which he could start to have the best results. Does anyone have an opinion as to whether starting to jelq during puberty is the ideal time for gains and whether or not I should talk to him about exercises.