Iam 47. It takes a few minutes, say 4 or 5, to get hard at the maximum.
Age, blodpresure, cut or not cut, and the messure of your penis are things that have an impact.
high blodpresure is bad for potence/
when cut and you are older your glance, by me, is difficult to stimulate
in basic mine penis is about 11 to 12 CM and full errect about 20 CM. How bigger the penis how more blod must go in the penis and that takes time.