Well Frosty, I'm not sure I'll need much adjustment since I'm in the central Texas area. We don't have severe winters in Texas and even less severe in the central areas. If I had to adjust for a real cold climate, I'm sure I would raise the calories, meaing feed more overall and I'd add more fat and oil. That's just off the top of my head though. I would also NOT fast on Sunday. With all that being said, I'll check here on this board as well to get some input from those in colder climates.