Well... too many times to count really, but only one of them hurt. I started going a little too fast for comfort and flew forward, hit the ground with stiff arms and cracked every bone in my back and neck. Hurt like hell for about 2 mins, then the pain when away... and now its back. :-D I haven't even gotten out of bed yet because I don't know if my legs are gonna work. I'm excited for my next trip though, so if anyone feels like teaching me a thing or two, I'm probably up for it.