Hi every body. I would like ya input. I have crackling knees and i wondering would doing steps five times a week would be okay ? I just discover Cathe when I brought a step at walmart it came with Cathe basic step which I really enjoy. why i'm asking is that I'm actully thinking about using Cathe's dvds and rotations to finish helping me get in good fitness and health. It seem to me most of her cardio come from using step ?