In bodybuilding, everything we do on our training days is about splits. We have to split up our muscle groups, as training every muscle in every session would result in some serious overtraining. Not to mention, we don’t all have 8 or 9 hours per day to spend in the gym. Time is of the essence. Once we’re in the gym, focused upon an individual body part, we have to split the muscle group into smaller sections. On chest day, for example, we must train upper, middle, lower and outer pectorals. Finally, we have to divide our sets between high, medium, and low repetition range exercises to ensure we are able to stimulate all possible sets of available muscle fibers. All in all, it’s a pretty tough job, with lots of division, but somebody’s ...

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