Many many years ago when I was heavily involved in the martial arts (think two training sessions a day punctuated by afternoon naps in the uni library) I used to go out with a girl who was at the Victoria Collage of the Arts as a dance student. Occasionally I would go and stretch with them and two things always struck me. They were like the walking wounded in some instances they were more battered than I was and my sport revolved around being belted and they had extraordinary athleticism.