I love the cold and thought that Tim would have a hard time with it when he moved here from Texas, but he put me to shame. He was in his glory, and loved to be out with just a T-shirt, while I had to have a heavy jacket. But after he was diagnosed it slowly changed, and he would just seize up. I have the boxes of chemical warmers from Costco as well, and in the winter put a down sleeping bag on his lower body with a couple of them thrown in the bottom. But he has also become very sensitive to the heat these days as well, and when he gets hot he says he feels like he has been pushed into a cactus patch. OK, I can't identify because there are no cacti here, but I know that it doesn't sound comfortable. I usually get a cold wet cloth and wipe him down to cool him, and now he sits under a large umbrella while on his wheelie pad over the garden to protect him from the sun. Then because he can't move even the fan can make him chilled and blue, so it is a balancing act. He won't complain, except for the prickly patch heat, so I check with him often. We keep the house at a steady 75 degrees winter or summer, but he does love the outdoors. You do what you can.