And I thought well what a start as I cartwheeled on the beam at the big gymnastics competition. I was so overjoyed with my teamates' comments from the judges. They got outstanding comments. Now it was my turn. As I did a half turn and a back handspring, felt a sigh of relief that I didn't fall off. I did a quick twirl and smiled proudly. I was nearly finished. But as I did a back handspring for the dismount I tripped and fell off. I knew that it was over because my leg had broken. Why did it happen ?