Help...I'm so confused on what type of resistance bands to purchase & where. The ones I had are too short, I tried to use them on High Step Challenge and almost killed myself. Not to mention the DVD says to use medium-tension bands. I really loved the workout but have had to substitue dumbels or use the High Step Training DVD instead do Leg & Glutes from FitTv, I have my favorites on DVR. Not only are these great for the muscle but the cardio benefit is outstanding. My friends all want to know who my trainer is or where I workout. No one can believe that I have the discipline to workout at home, I love it, Cathe is the best thing I've ever found. I had lost 80 lbs on my own using Self Magazine monthly challenge & proper eating, but was still lacking the definition. I had gone from a size 16-18 to size 2, I was a size 0 but I was not health without definition, this has helped me to maintain my perfect weight for almost 3 years through right eating & exercise. I am now studying for my Personal Training Certification which is something that I've wanted to do since I was 20 years old, even at my heavier weight I continued to exercise. Now that I'm 48 yrs, my friends say I look in my 30's. Thank you Cathe.