That's because, while traditional saunas operate in excess of 200 °F, infrared heat can provide those same benefits at a far more comfortable 100 - 130 °F. (jjvirgin.com)
Sweat theory believe that traditional sauna uses high heat and humidity to warm the air, but infrared uses light and radiant heat, which warms the body (instead of the air), and can do so at lower temperatures, which allows you to sweat more to help rid toxins. (spaitgirl.com)
Unlike traditional saunas which operate at extremely harsh temperatures, infrared is a gentle, soothing and therapeutic heat that promotes relaxation and improved sleep. (sunlighten.com)