Hibernation rears its ugly head

It's officially C O L D. Here comes my hibernation period. I try to avoid it every year, but it sneaks up on me each time!! I am totally, 100% a warm-weather girl and winter just throws me way off balance. Maybe it's from my lack of vitamin D. Or maybe it's from cold blood in my veins each time I leave the house. I ran twice this week and couldn't wait to be done. I feel I may have to suck up my pride and join the gym. Anyone care to join me?