By observing the native aborigines of the Australian desert of the Pitjandjara tribe, who are normally exposed to low temperatures at night (0ºC) while sleeping in the open and naked, scientists have found that they sleep deeper and maintain body temperature better (35-36ºC) than ordinary mortals. The skin of these subjects also remains more irrigated and the metabolism supplies more energy to the cells and tissues. In this sense, everything points to the fact that repeated exposure to cold does generate physiological changes.
On the other hand, a study published in the European Journal of Phsysiology revealed that daily exposure to cold water in athletes reduces their basal temperature, as well as the sensation of cold when exposed to low temperatures. And it also increases subcutaneous body fat.
