It is no secret for anybody that the larger the contrast between the tem perature of the surroundings and the body temperature, the more active the metabolic and thermal regulation processes are in the organism, which determine the ability to live in any climatic conditions without becoming sick.
Diseases are caused by disorders in human homeostasis, where adaptation mechanisms are unable to cope.
Through regular training it is possible to influence homeostasis, and gradually develop the ability to adjust to increasing deviations from its norm without causing any diseases. This training principle serves as the basis of almost all adaptation techniques, for example: cold, hot, sun radiation, tempering, etc. But another principle exists that allows one to adapt to the surrounding «external» conditions by consciously harmonizing the external surrounding conditions with the internal processes in the organism by will-driven control alone, rather than by training.
If “polar bears» can bathe in ice-cold water regularly, they are supporting their trained capability to withstand cold. But yogis may not bathe in cold water for several months, and if it is necessary, they can tune themselves to harmonious interaction with the surroundings, bathe in cold water and avoid diseases by using their ability to influence change by using their Power of Will. They tune to the rhythms of nature in any given season or to the natural surroundings at any given moment of time and psychically shift the «internal» energy processes of their organisms, so as to make them correspond to the «external» conditions. For such psychic adjustment, yogis often use special types of breathing, which accelerate the changes in «internal’ rhythms. For example, before going into ice-cold water, yogis inhale and simultaneously lift their arms above their heads, and delay their breath. Then, with a post-inhalation breath delay, they lower their arms down in front of their chest, and move the air from the chest cavity to the abdominal cavity, thereby filling the lower center with energy. After that, when they exhale, they subjectively do not feel any loss of the energy they received. This is followed by another inhalation, with arms raised above the head, etc. After several breathing cycles the yogis firmly walk into the ice-cold water and dive into it completely (including the head).
The yogis’ ability to stay in ice-cold water for a long time, or to dry several wet sheets on their backs at one time, shows the evidence of the power of metabolism and energy processes inside the body. And their eccentric competitions, which at first sight may seem strange, have deep meaning.
Using similar yogi techniques independently, it is necessary to remember that thermal output is very fast in water. In order to avoid possible diseases, one should never overestimate his/her real psychic-energy capabilities, and should follow his/her intuition and sense of reason.