Although more and more people are learning firsthand about the fabulous benefits of owning a far infrared sauna or heat therapy room, many others still possess very little knowledge of this important subject. The following information has been compiled to help spread the good news with the hope of placing more people on the path to greater health, relaxation and happiness.

1. Infrared light lies between the visible and microwave portions of the electromagnetic spectrum. Infrared light has a range of wavelengths, just like visible light has wavelengths that range from red light to violet. Near infrared light is closest in wavelength to visible light, and far infrared light is closer to the microwave region of the electromagnetic spectrum. Far infrared waves are thermal, meaning they are felt as heat.

2. In the electromagnetic spectrum, far infrared wavelengths measure between 5.6 and 1,000 microns. One micron equals one micrometer or one millionth of a meter. Wavelengths of between 6 and 14 microns are believed to be the most beneficial to humans and other living things on Earth. The human palm emits far infrared wavelengths of between 8 and 12 microns. The energy output from far infrared saunas so closely match the human body