I don't really have any challenging Cathe moves for cardio since I don't do alot of Cathe cardio. As far as strenght trainning, I have never done the inverted V pike (I don't have that tape, but I hear it is quite difficult), but I HATE the low end lunges and squats in Power Hour. When I am done, my legs cramp right up. I get so mad a Cathe when she says "low end"...even though I know that they are comming. I hate them, hate them, hate them. I have noticed though that since I have been doing them for about 2 months now, that my legs don't freak out so much when I am done with them and I can complete the reps that she does. When I first got the tape, I could only do about 1/2 before I couldn't feel my leg anymore. I am seeing improvement, I just wish there was another way besides......low end!!!!!!!
Kim