I think Anne has some good wisdom here; I was also taught to roll; if you curl up and roll you'll fare better; but that's hard to do when your bike tips over. Now, if you actually go flying from your bike like i did 10 years ago when taking a bad turn too fast, if you CAN get into a fetal position, that is definitely the way to go. I cracked some ribs; but did not break arms, hands, face...