If a lot of them are athletes at a young age, it will stunt their development by putting off puberty (excess of testosterone, I think?)
Flexibility FTW! Nastia's pretty hot, but her forehead's a bit big. Personally, I think Shawn Johnson's way cuter.
She's not hotter than the other girls mentioned in this thread. Not even Shawn Johnson. Look at her touching herself in that pic, how hot is that