The back is a very large muscle group which should be trained. If the back is not trained with the same intensity and frequency as the chest muscles, muscular imbalances will occur and injury is much more prevalant. Remember that the Erector Spinae muscles are actually ‘deep’ muscles and aren’t shown in the image.The function of the back muscles are to ‘pull’ towards the body. There are many muscles that make up the ‘back’.Hypertrophy back training should always be started with a major compound exercise suc