While traditional steam or dry saunas heat up the surrounding air to about 185 degrees, which in turn heats you from the outside-in, Infrared sends heat directly to your cells in the body. The heating elements of our full spectrum infrared sauna has NEAR, MID, and FAR heat waves only need to reach about 120 degrees to reap the benefits of the treatment, according to a 2009 review of evidence on infrared saunas and cardiovascular health. The full spectrum of the many wavelengths of infrared rays penetrate more deeply into the different body tissues, which means you start sweating at a lower temperature than in a traditional sauna. Only 20 percent of the heat generated by far infrared technology heats the air within the sauna – the other 80 percent heats the body directly. Far infrared heat raises the core body temperature, triggering specific bodily functions including the cardiovascular system, the lymphatic system, and the immune system. This unique heat produces a lighter demand on the cardiovascular system, similar to moderate walking, according to the review, and so might benefit people who are sedentary for medical reasons. It’s also good for people who like the idea of a sauna but find the high heat unpleasant.