When you imagine a perfect body, your favorite athlete, actor (tress) and models come to mind. You always wonder how they tone up and sculpt those amazing muscles. Doing this takes a combination of minimalistic diet approach and very rigorous workouts.
One of these rigorous workouts that target specific parts of the body is upside down pull ups. It is unheard of by most gym enthusiasts due to the unique movements involved. However, it is very effective in the sculpting of the arms and upper back muscles.