Oh, I know this one! If your back hurts from skating, it's because of the way you use so many core muscles for balance when skating. A lot of beginners will have their weight too far back on the foot, and that causes the whole body to do a sort of bottom to top wiggle. If it's too fast, it can feel more like your feet whipped your whole body around. This really causes a lot of stress on the lower back, because those muscles aren't usually well developed and aren't very good at stabilizing for that kind of sudden move. (Especially if you're tensing from worry.) Starting slow and learning to fall backwards properly really helps, because then instead of "fighting the fall" and hurting your back, you can just kinda relax and roll into the fall to avoid injury. I know it sounds scary, but once you get good at falling, it's actually kinda fun. The thing I like most about learning a new trick is how many times I get to do spectacular falls before I master the trick. If you want to learn the art of falling well, beginner judo videos really help.
