Why does the skin of the palms of the feet of a firewalker's bare feet on a charcoal fire not burn?

Some scientists believe that the internal organs of the human body are generally controlled by the vegetative nerves, and their function is automatic, and qigong exercises through relaxation, intention, abdominal suction, over time, can make the excitation of the central nervous system affects the excitation of the vegetative nerves, thereby affecting the function of the vegetative nerves, so as to control and dominate the internal organs of the body to greatly improve the function of the organs, and to make the body's a certain motor organ and the coordination of the organs, can exert extraordinary power, dancing on the charcoal fire will not cause burns.

The body can exert extraordinary power and dance on a charcoal fire without being burned.

Some scholars believe that the firewalkers have special skills, after a long time of exercise, the soles of their feet produced a thick layer of calluses. This is barefoot, but the thick callus skin is like a pair of thin-soled shoes, protecting the palms of the feet so that it does not burn. Some other scholars believe that people can withstand the external environment, how high the temperature, depending on the body's excretion of sweat evaporation rate, and sweat evaporation depends on the humidity of the air and air convection and so on. The lower the air humidity, the faster the convection, the more conducive to lowering the temperature, the more people can withstand the external heat. Firewalkers first dance around the bonfire, and then jumped into the fire pit, firewalkers in the dance has been sweating, in addition to the charcoal fire baking, the soles of the feet sweat drops in the hot coals, the formation of steam layer. This steam layer thickness of 0.09 millimeters, slightly thicker than a hair. Water vapor is a poor conductor of heat, and its thermal conductivity is normally an order of magnitude worse than that of liquid water, so the vapor provides instant insulation and protection from the sweat droplets. The firewalkers hurry, light, swiftly with one foot or both feet take turns with the charcoal fire for a short contact, between each step, the foot plate constantly sweat, constantly forming a layer of steam, constantly being cooled down to dissipate the heat, this is the foot is not burned the mystery of the place.