I took my first spin class last night and I loved it! But O.M.G. does my rear hurt today. I feel like I'm waddling when I walk because it's so sore. Is this normal???? I really want to go to the class again tomorrow, but am hesitant of making it hurt even worse!! Any recommendations on how to make it more comfortable (i'm not prepared to buy a gel seat yet, as I'm just beginning to try this out.) I thought about taking an extra towel and putting it on my seat for a little more cushion, but didn't know if that would really help. What did you do???