Im reading a lot about the Iron Man HIT training (ABAB rotation training) and I have a question. What makes this training so effective? Ive read a lot of people swear by it. It seems that you dont do as many workouts for the parts of your body. Maybe I havent read into it enough, but I cant understand how going from specific body part training (ie: back and bis on monday, shoulders legs wed, chest tries fri) with lots of reps and sets can be outperformed by this HIT training. Make sense? lol