A sauna is like a house or a room, which is designed to experience dry or moist heat sessions, for the purpose of relaxation and induction of sweating. There are two main types of saunas viz., the conventional and the infrared saunas. The conventional ones warm the air, whereas, the infrared ones warm the objects. Usually, the infrared ones are more popular, as the materials used to operate them are charcoal, active carbon fibers, etc.