Indoor infrared sauna cabin. Unlike traditional saunas that heat the air, infrared saunas use infrared light to directly heat the body. Function: They operate at lower temperatures (typically 100–165 degrees Fahrenheit) while still inducing a deep sweat. Benefits: Potential benefits include muscle recovery, pain relief, relaxation, and improved circulation. Components: The cabin is typically made of wood and equipped with infrared heaters. Heat Type: The heat generated is a dry heat.