Ultra SK But in winter, dehydration is just as important: for example, when we are cold, the steam comes from the mouth and nose; This is exactly what removes Ultra SK the precious moisture. In closed, very dry and hot environments, moisture is lost so quickly, even if we do not realize it externally. So to drink in winter need more in summer, and it is pure water.I do not want? Try replacing pure water with coffee and tea, if you can not, and drink a glass of water when you want a snack. It is true that many people, at least adults, we know that thirsty when the body begins to dehydrate, so it is best to determine the daily water standards for ourselves and learn to drink between meals.