out of experiance, dont put your hand out in front of you where your elbows wont bend in the impact, i compound fractured my right arm a few years ago(compound mean bone broek the skin and popped out of my arm, for those who didnt know), it hurt like hell, and now i have 2 steel plates and 12 steel screws in my arm, not too pleasent. try to land on something solid on your body, shoulders are good...