FIR warms only the object and does not raise the temperature of the surrounding air. To understand how infrared heat works, picture yourself outdoors on a summer day with the sun beaming overhead. Your body feels warm from the sun and you become hot. Then a cloud passes overhead, blocking out the sun. The temperature outside has not changed,but you feel cooler in the shade. Your body was being heated by the sun’s infrared rays. Infrared heaters warm the body in the same manner as natural sunlight.
All life requires FIR heat from the sun. FIR heat is not ultraviolet radiation but a narrow band of energy within the 5 to 15 micron level. This type of energy travels 2-3" deep into the body to increase circulation and nourish damaged tissue. The sun is the primary source of radiant energy, but not all of this energy is
beneficial. Sunlight also contains harmful ultraviolet rays which are not present in the infrared sauna.
Although life needs energy from the sun, too much sunlight damages the skin. FIR heat provides all the healthy benefits of natural sunlight without any of the dangerous effects of ultraviolet.
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