Far Infrared vs Conventional Saunas
A conventional sauna must rely only on indirect means of heat: first, on convection (air currents) and then, conduction (direct contact of hot air with the skin) to produce its heating effect on us. In a far infrared sauna, less than 20% of the infrared energy heats the air, leaving over 80% available to be directly converted to heat within our bodies. Thus an infrared sauna can warm its user to a much greater depth and much more efficiently than a conventional sauna. This crucial difference explains many of the unprecedented health benefits reported to be available through a far infrared sauna that are not attainable through a conventional sauna.
The infrared energy applied in Soft Heat™ may induce up to 2 – 3 times the sweat volume of a conventional sauna. The surrounding air temperature is typically between 115 and 135 degrees F vs. 180 to 235 degrees F in a conventional sauna. The lower heat range is also safer for those concerned about cardiovascular risk factors that might be encountered in old-style hot-air saunas.
What is far infrared and how does it work?
Infrared waves are part of the invisible Electromagnetic Spectrum (EM). The electromagnetic spectrum is divided into three segments by wavelength, measured in microns or micrometers (a micron = 1/1,000,000 of a meter): 0.076 to 1.5 microns = near or close; 1.5 to 5.6 microns = middle or intermediate; 5.6 to 1,000 microns = far or long wave infrared. The far-infrared segment of the electromagnetic spectrum occurs just below, or “infra” to red light as the next lowest energy band. This band of light is not visible to human eyes but we can, however, feel this type of light, which we perceive as heat.
Human bodies send and receive far-infrared waves. The range of far-infrared waves generated by our bodies is 6 to 20 microns. The optimal micron output range is between 7 and 14 microns. This range, sometimes called the “Vital Range,” appears to have regenerative effects on our bodies.