silver_shadow said:dude you think you gained from iso exercises, when you actually gained MOSTLY from compound exercises along with a high cal diet. i see loads of skinny little guys curling the crap out of their biceps... they never train legs and they never get big overall... so their arms never grow.... i think you've seen those guys in your gym as well...
key word is skinny. the definitive study would be to have someone train arms only with proper high cal diet aimed at gaining size to see if there arms grow or not.
i go with what works for me. i just remember a time when all i did was arms bc i didnt know any better and they blew up.