When you fall don't freak out. Just go with it and don't try to break your fall with your hands. If you stay with your bike and just go over it doesn't hurt. Keep your knees in toward the center. I think I fell about three or four times. It mostly happens when you're tired at the end of a ride. I commute in town on my fixed gear and since I'm not twenty something I just use rat traps to keep my feet from slipping off the pedals. On recreational rides I use clipless. Best of luck.