Adjustable Rate Mortgages How Does Arm Work 5 Arm-Blasting Workouts – A Beginner's Guide! – Bodybuilding.com – There you go. 5 killer arm workouts. Now you have all the ammo to help build your guns. I hope this article cleared up some of the questions you might have had about building your arms. It takes hard work and a sound workout program to improve your physique.