Has anyone taken this class before? I'm starting up the week after Thanksgiving, on Tues & Thurs at 5:30am, and maybe on Saturdays too, if I have the time. I'm just wondering what to realistically expect. I'm taking it with a friend who has taken it before, and she just keeps telling me that I'm going to be sore, but that it'll get better as we go to more classes. I don't even know how to dress for this? Would cotton shirts be ok, or should I stick to tech gear? Running shoes ok, or do I need to get cross trainers? I feel like a fish out of water starting up with this, but I guess there was a time that I felt like this with running too, and now I have 3 halfs under my belt.