I've always been on the thin side most of my life and I certainly don't plan to change at this point. I do lots of walking and hiking when weather and time permit, so its no problem discarding some extra pounds. Do what you like and enjoy the most to get yourself into shape if you're not or to refine what you've done if you are! There's no sense in doing something you don't enjoy anyways. Its better to focus on what you do love!
Have a great festive season, guys!!! - V