Building massive arms are not possible without proper training. In bodybuilding, the smaller muscle group is followed after the larger muscle group. For each muscle group, there are different workouts.
Exercise is the basic a fit body, but these workouts are idle without proper nutrition. Adding human growth hormone supplements will definitely boost your energy levels. This will lead you up towards your fitness goals. Watch this video by FitnessAllAround showing bicep and triceps workout for muscular arms.