I think the easiest cue for a lot of people is to think about pulling the bar apart or squeezing the bar over your back... Personally that doesn't actually work for me. I like to shrug up and then pull down. So [I'm] shrugging up and going to tighten up everything that's in this upper back and then when I pull down I'm gonna kind of let my traps relax. I don't want tight traps; that's gonna prevent me from using those muscles effectively.