Haha Mike, this was eons ago, when I was very thin(!), young and active.
I lived, ate and slept horses. When not in school I wore my trusty pair of very smelly jodhpurs and a yellow polo-neck jumper with a horse's head knitted into the front (knitted it myself) My local riding school entered me in many gymkhanas, on my favourite horse called...er...Nigger. (Oh dear... very un-PC nowadays!)

I went ice-skating a lot when I lived in Edinburgh (Murrayfield ice rink) I was so thin that when I played left inner for the hockey team I could dart in amongst the big beefy girls almost unseen.

As for swimming, I was quite good at that too.

But I weighed only 7 stone for years, and had long thick hair almost down to my knees. I think being skinny makes one quite nippy and agile.
My parents were very disappointed that I loathed tennis. :)