Bradley musn't have wrecked bad yet. Hopefully he never does if he hasn't.
Any kind of racing is dangerous, you put yourself out on the edges of your ability and sometimes beyond your ability.
You really need to be careful and stay within your limits.
I think is gets safer with time.
Here's what I looked like after my second race(riding above my limits).
http://pictureposter.allbrand.nu/pic...ark/Bruise.jpg
That was the last time I crashed hard, about 4 years ago. Broke 2 ribs and seperated my shoulder also.