Shoulder Workouts To Build Mass Your arm muscles are among the most noticeable and prominently displayed muscle groups in your body. For this reason, most bodybuilders naturally desire an impressive set of arm muscles. And when we talk about arm muscles, well-developed biceps are probably the most sought-after. So, how do you build strong, fabulous biceps? Use the following shoulder workouts in your weight training program. Dumbbell Press :- Dumbbell Press Exercise is one of the most effective exercise you can choose to build your muscles and not to mention your arm muscles which are the triceps. Dumbbells have different feelings when you hold them compared to barbell press weights.