Hi Natalie,
I tend to think of these in categories -- otherwise I get confused. My categories are: (this breakdown is from the book, READY, SET, GO! by Phil Campbell -- a book about kicking up your intensity training -- and what that has to do with staying young and keeping healthy)
1) aerobics -- cardio
2) anaerobics
3) muscle or endurance training
4) plyometrics
5) stretching
I know there's many subdivisions within each category, but these are the main components of a good fitness rotation. Now, I tend to categorize MIC in the heavy aerobics to anaerobics category and so for me, I would substitute it with IMAX or IMAX2 or High Step Advanced or Bootcamp -- all four of these I consider tapes that give me an anaerobic workout, plus cardio, plus plyometrics. High Step and Bootcamp also gives me mucle training, meaning I need to put a full day off from anaerobics AND muscle training between the workouts -- usually after an anaerobic AND muscle tape I do a lower cardio workout.
Don't know if this will help, but there you go. My take on it.:7