Originally Posted by them_apples
you aren't done growing at 17, you can grow all the way till you are 19-20.
Duran was a big and strong lightweight, big skull, broad shoulders. When he moved up to WW he fit in nicely.
He got by on skill and a rock hard chin.
muscular men and men with large bones actually gain weight naturally all the way into their early 30's. everybody hits the man strength years in his early 20's. perhaps once in a blue moon you'll find a small guy who has peaked physically by 20 years old, but it's pretty rare.
just check out all your friends in your high school yearbook. lots are fat now, sure, but even the fit ones are tens of lbs bigger.