Chinese Gymnast too young

[Ginger's Mom]

They changed the age rules years ago because they worried about injury in girls too young ...

Yes, this is what worries me the most. The girls are so young and their bones are still developing. They could cause some serious permanent injuries, and likelihood of that does decrease after the age of sixteen (actually I thought it was eighteen for girls).

Gymnastics is the only sport where younger is better, physiologically, the younger you are, the better muscle-to-weight ratio your body has.

Thank you for explaining that. I must admit I was a little confused as to what the advantage was, because I was thinking you will develop better balance and muscle control as you mature. So how can being younger be an advantage.