you cant get "big" without taking drugs anyway so try as hard as you want, you will just end up being "in shape".
Bingo. A few will have the genetics to hold some size, but most guys are like me. You get to choose between big & fat or lean & small.
Besides, just being in shape is enough. People tell me I have "big arms" and they're like 16"

. Just workout regularly and eat healthy and you'll look way better than the 95% of the population that considers mallwalking to be hard exercise.