What muscles does the front barbell raise work?

WhatWouldArnoldSay?: You mean raising the arms straight up in front of you? Well,it puts a big strain on your back muscles, so be careful. In fact if you move up to heavy bells,for any exercise that unbalances you like that, try doing it against a wall. As far as the arm muscles: primarily the deltoids, but the whole rotator cuff engages in order to stabilize the shoulder.Also, to a small degree, the forearm extensors