I posted this in the DVD forum but I thought I'd also post here to see if anyone here can help me out. Here's the question Hi, I'm starting an older Cathe rotation and I need a substitute for these DVD's. I started buying Cathe's Dvd's around the kick,punch and crunch period. I need a substitute for CTX - Running at a moderate pace-Running in intervals for 20 minutes-MIC-Power Hour. Any help would be much appreciated.