Are there any articles or studies that show it's better to work your traps on one day or the other? I've been working my traps on shoulder day since I started working out over a year ago and they still suck. I've tried all different shrug variations, as well as upright rows and nothing works. I've recently started doing hang cleans so maybe that might help a little. The only thing I haven't tried is switching them to back day. So when do you work your traps?