As others have said... too many variables to say for sure, but with proper technique, people
can pull off (land) some crazy shit.
When I was a kid (6-8 years old), I used to jump off the roof of my house.... it was at least 15-20 ft up
and land it with a body roll forward. I never got so much as a bruise. I was always good at landing
from falls or when jumping out of trees, etc.
FYI, I've never broken one bone in my body (I'm 35)... and I've been in some nasty car and motorcycle
wrecks, played contact sports, lots of fights when I was younger
.... I think alot of it has to do with bone flexibility.
I knew a couple of girls growing up that broke something almost every year. It was crazy... and these
girls didn't play sports or anything. Just knida odd.
-ZA