The heat waves of a far-infrared sauna effectively heat the body and boost the body's core temperature by penetrating it. Far-infrared emitters provide infrared energy that is nearly the same wavelength as that which the body naturally generates, commonly referred to as the "Vital Range" of 7 to 14 microns, in order to attain this enhanced temperature. As a result, your body will receive energy pretty well. The skin is deeply penetrated by infrared energy, which warms the muscles and joints as well. The body's internal temperature rises as the energy enter it, and this results in perspiration.