Extra Layers for the Cold

I was talking to the lady I get my eggs from (go ahead and insert 'granola' comment here). She has free range chickens, and they have had terrible trouble with predators this year. Bobcats, hawks and coyotes...you name it, they've had it. She said that these animals have the instinct that it is going to be a long cold winter, and the are packing on the pounds (in the form of her poor chickens), to keep warm for this winter.

So my question is, are we the same? Is this why I ate probably a total of an entire pan of fudge over the last 3 weeks? I literally have a giant muffin top that has appeared in the month of December. Is it because I know it's going to be cold and I need that extra layer of warmth? I'm just gonna go with that. It's my instinct. It's what we do.