The tenet of a gradual and sequential build exposure, it will be the temperature of the water, air, or the duration of insolation. It is also based on the ability of an organism to respond to a growing impact, getting used to the constant action. You should always start with a small dose and easiest ways. Swimming in the ice or snow rubdown should be left for later, preferring them to start pouring feet or hands with room temperature water and gargling. In this case, you are guaranteed to get a small quenching effect and also guaranteed to avoid colds from a sharp hypothermia. Gradually lowering the temperature of the water or air, and increasing the duration of the procedure, do not forget to record the response. If tolerance is not improved, or conversely be