The determination of body temperature in humans is an essential feature that must be maintained within a certain range, called neutrality, to maintain human thermal well-being. Human is a homoeothermic species, which means that it maintains its body temperature in a certain range of values, for example, the oral cavity must remain between 36.5 and 37.5 degrees centigrade. However, if the external conditions are not favorable, adaptive thermogenesis may be necessary, by applying specific physiological methods, it heats or cools the body to maintain its temperature within a certain range, beyond which it could face frostbite, coma or death. Most studies on human thermal well-being deal with two main themes: the first concerns the development and production of sports clothing, while the second concerns the development and production of work clothing.