Reason #2... to exercise:

You can get super creative with your routine. Aaaaaaaand maybe throw in a glass "water bottle" that may or may not contain regular old water (I'm betting it's alcoholic...). I commend this crazy man for getting out and moving around in obviously below-freezing temperatures, but man, he's gone a little nutty in this video! Shirtless is one thing, and dunking your head is another, but plunging in WITH SKATES ON?! I hope there was someone else there in case things went wrong, though I have a sneaky feeling it was all/mostly tri-pods and self-filming. Makes me shiver.