Our Sunlighten mPulse sauna generates near-infrared light using patented LED panels. This near-infrared light can best penetrate the skin and activate the mitochondria in our bodies and generate the most heat from inside the body rather than the air. The human body is composed of over 50 trillion cells, each a home to the mitochondria. The mitochondria are sensitive to light, but particularly to the infrared light spectrum. The infrared spectrum of light can deeply penetrate the soft tissue of the body which stimulates cellular regeneration and heightens mitochondrial activity, therefore, improving circulation through vasodilation. The healing effects of the infrared sauna are not dependent upon external heat but rather the mere exposure. Temperatures in the infrared sauna can be set to as low as 100 degrees and still have a powerful impact on the blood vessels in the body.