Hardening technique for men 40-50 years for winter swimming

An extremely important means of preventing "cold" diseases is the use of various hardening procedures. Many of the previously frequently ill people stop getting sick at all or get sick 2-3 times less often after they begin to systematically actively harden. When hardening, the body develops resistance to cooling and, thereby, to "colds" and some other diseases.Purpose - the influence of various hardening factors on the development of a training effect for cooling and what factors of influence and their combinations (strong or weak, conduction, followed by warming up, self-massage, etc.) are the most optimal.Methods and organization of the study: The mode of accelerated local adaptation was used in the experiment. The task of the study was to find out how all these various factors influence the development of a training effect for cooling.