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This is how people die from hypothermia.
Back in 81 while doing arctic survival training we learned that blood actually thinned during exposure to cold to flow better to extremeties to keep warm. Cappillaries expanded to allow more blood to exposed areas, hence the redness of cold skin. You must keep core temp up by either insulation (clothing) or food and warm liquid. As stated avoid alcohol in the cold. A good pair of boots and a good hat are essential in the cold. You must also know signs of hypothermia and watch for them. It is a silent killer. I know alot of people around here, Myself included who seem to be able to take the cold much better than most. I believe it is better physical condition than anything and the clothes we wear are proper for the climate. We could start a whole new post on what to wear when out in the cold and I bet we would get a zillion different answers. Learn to listen to your body and add or remove clothing as it tells you. Steve