Thanks for the reply Dan. I do heavy sets of the 4" in sumo block pulls as per previous advise from you. Sometimes when i pull it feels like i am more relaxed in my upper back... and then it feels like my arms are longer and the pull is easier. I can't understand what i'm doing when it feels so much easier though. I get so fired up and do a standing plank like a pyschopath :) How can you describe a relaxed upperback? Arms more in front of you? Deliberately round forward?