UA_Iron said:172 is light, but lets put things into perspective. If he was 6' and 200lbs would you be saying the same thing?
I've heard numbers like 8lbs/inch. So if he were 6' tall he'd weigh 204lbs roughly
But I agree with a lot more weight can be gained naturally, and you are the perfect example needsize. How much did you weigh before running AAS?
I was 185lbs at 7-8% bodyfat when i started my first cycle, I'm a hardgainer so it took until age 27 to get there, i was 210lbs at the end of the first cycle
I actually recently found pics of me just before that cycle,