Since I'm new to weights, I could be super duper wrong but I thought chest, triceps, and shoulders were supposed to be worked together and then back and biceps together. This is how I've been doing Total Body Trisets So I was wondering why the upper body for xTrain is divided up as it is with bis/tris and then chest, shoulders, back? I'm sure it'll make more sense when the calendar is available, are you supposed to use both disks and do all upper body the same day?