This is my solution for optimizing your arm workout in the quickest amount of time for the fastest results. The main muscle groups I target in this video are the arms aka biceps, triceps, and shoulders. Let’s face it, sexy arms in that wedding dress. The key is to use heavier weights and lower repetitions to muscle failure (i.e. until that uncomfortable burn doesn't allow you to do anymore) to challenge the muscles. This is the only way to promote growth and tone up quick.