I figured out why I'm so tired. It's not the cold. It's not the walking. It's not even the incredibly uncomfortable bed in the hotel room.
It's the fact that Jason wakes me up at 5am. 5AM FOR NO GOOD REASON! He can't sleep anymore so he pulls out the laptop and starts working on blog posts, or emails, or a game of chess that states EVERY MOVE IT MAKES WAKING UP THE PERSON TRYING TO SLEEP TO A REASONABLE HOUR RIGHT NEXT TO YOU.
I think I'm going to start hiding the laptop once he falls asleep at night.