I, too, always split this workout into legs and upper body. For me, I've always liked the legs as it was an intense yet quick workout. I believe the leg portion is about 20 minutes. You get a lot done in that 20 minutes! When using this in a rotation, I vary this with Leaner Legs and ME Lower Body split premix. For the upper body, I alternate MIS with CTX upper body and ME upper body split premix.
Jo