Right now I'm on a three-day complete body lifting program, where I hit all the major muscle groups in that amount of time. However I'm not sure if I'm working my upper body muscles in a productive manner. If I have all my leg workout set for one day, which upper body muscles do you guys recommend I should group together each of the other two days? I have had it at triceps, shoulders, back on day one and abs, chest, biceps, and forearms on day two.