Surviving a polar vortex

Brrrrrrr, can you say polar vortex? I know it sounds made up, but it’s a real thing and it’s making things freezing out here. So cold that we haven't been out in the past 3 weeks except for some errands here and there. It might explain some of this lack of motivation that I’ve been having for the past few days. What do you do to get you through the cold?