i am 26 year old and i have notice when i am with my partner that my penis erection is not what it was when i was younger my erection is a little weaker so is my sexual pleasure i am healthy i dot smoke and i exercise i do masturbated 1 some times 2 times a day when i was younger i masturbated a lot is my present condition a result of year of masturbateing is there some thing i can do about it