I'm pretty sure we've had a height/weight thread before, but anyway, I'll chip in. I'm 5'7" (yes, I've grown since last time) and I weigh 65kg (yes, I've put on weight as well).

6strngs, I'm not the sports type either - man, I've been unco for as long as I can remember :o - but I do fencing, which is a pretty high-intensity sport. For me, the appeal is in the tactical co-ordination of mind and body - it's like physical chess. Plus, you get good exercise. Maybe you could look into something like that if you're looking for a sport that appeals to your interests.