Did anyone notice that the reps in the Chest, Shoulders and Triceps workout seem to be done a lot faster than in the Back, Shoulders and Biceps workout? My only problem with the CST workout is that if I'm going to maintain good form and not risk injuring something, I've gotta decrease my weight and then I feel like I'm not challenging myself enough by not going heavier. I did the Back and Biceps premix because I really didn't want to work shoulders twice in one week. I also have some neck/shoulder issues that haven't reared their ugly head lately, but if I tweak something just so, here they come. Did anybody else have to drop their weight to keep up and keep good form. I would think that good form ultimately the most important thing. I can't do chest presses with 25 pound weights at the speed that Cathe was doing them. Next time I need to drop to 20's. Same for the barbell front presses. While I want to be challenged and get results, I certainly don't want to re-injure myself either. The back and biceps workout was superb and I did the Low Impact Hiit premix this morning combining workouts 1 and 2. Dang, Cathe has a way of making low impact almost more intense than jumping around! Both LIH workouts were awesome. The only thing is so far I'm not crazy about the music in this new series. CrossFire, To the Max and XTrain had the best music, IMO.