I played hs and college football at defensive end and to this day, I'm something of a gym rat. I've cut back on the heavy weights, but still like to maintain muscle tone and overall cardo fitness. As a result, my shoulders are probably a bit of a give away. Still, I don't dress (completely) in public and I like the way my clothes fit and look (other than my waist still needs work!) Don't sweat it. wear jackets or loose sweaters to cover the arms and you'll look fine!