My accounting teacher and adviser told me that one of my many problems is that I don't ever seem relaxed. I don't understand why; I can't lower my shoulders any further than they are. I keep my hands to myself when I sit or stand; either they're at my side while standing, or they are on my lap if I'm sitting with no table in front of me. I have good posture most of the time. He also said that if I wear a short-sleeved polo shirt, to keep the topmost button unbuttoned. He didn't say why, though, and I figure that if there is a top button then it is meant to be buttoned while worn. So how do I give off a relaxed attitude without slouching? I just don't get it.