If by "lower arms" you mean trceps, then I believe that they can. Honestly, I don't work my triceps in particular, they just kinda of develop as my body does. I mean if you're doing exercises like deadlifts, pullups, and other verious exercises you'll be fine.
I think he means forearms and the pullups/chiups will do it.. dunno about the deadlift but it will increase your gripper muscle which is connected to the forearm.. so .. yeah [img]smile.gif[/img]
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Fool me once, shame on you. Fool me twice, you cold-hearted bastard. You did it again!
Yes, exercises involving gripping will build up your forearms. Thats why exercises like deadlifts,Farmer walks and wrapping towels around a bar and gripping it work so well.
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