If everything else is getting bigger the arms should follow. I'm new to this site as well.. But listen to these guys they'll point you in the right direction you just have to do a little research on here as well. There is plenty of info here. IMO bigger arms is not always better. just me though... Build it all fella...

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You come into the world weak, and you will leave the world weak. What you do in between is up to you!