^ I think it's all of the above. Puberty and injury are a spin of lady luck's wheel. But today's headcases are perhaps spoiled by choice. I have a hard time believing 15 year old post-crash nat champ and Olympian Fleming had 0 pressure from her federation and not a single person interested in shows, interviews, etc... Some people have a head for the sport, some people don't, and that's not a dig.