In order to more effectively target your back muscles, don't wrap your thumb around the bar when performing pullups. It is much better to place your thumb on top of the bar. Performing pullups in this manner will reduce the amount of involvement your arm muscles have during the exercise and force your back to work harder.There are just some exercises you may not like doing, which means you should start doing more of them. Many of us tend to avoid the exercises we are weaker at. By specifically…See More