Okay, admitted, it's my own fault. I went skiing on Saturday at a small ski resort in Sweden called Isaberg. It's not that big but it's perfect for a one-day outing if you get a ski-craving.
I'm not (at all) the best skiier in the world. Truthfully I only really tried skiing twice before in my life. But I managed to stay upright most of the time and actually began to get the hang of it. The biggest problem was that the temperature hadn't been below freezing for over a week so the snow that was left was really lousy. But nonetheless I had a really good time. And like I said, I'm paying the price today. My thighs are really killing me ;-)
Coincidentally, one of my younger brothers had also decided to go skiing with a friend - I met up with them at the top of one of the slopes.