Traditional saunas, also called rock saunas or Finnish Saunas, use various types of heaters to warm the air and stones in a room. The room's walls can be logs or some other material lined with wood. Stones placed over the heat source attain a high temperature. In its primitive form the stones are heated by wood without a chimney. The fire dies and the smoke exits by the door. Heat is maintained by the stones. Stones are usually peridotite as they are heat stable. Modern Finnish saunas have thermostatically controlled electric stoves or wood stoves with chimneys.
In a traditional sauna the air temperature typically runs between 169 to 190 °F (76 to 88 °C), though temperatures over 200 °F (93 °C) are sometimes encountered. The hot air causes ones body to heat up, and eventually results in a sweat. Water is thrown on the stones to achieve a "steam shock". Some devotees enhance the experience by mixing vodka etc in the water. This produces a quick "high". Some add herbs or oil like eucalyptus. Traditionally, ones skin is beaten with a bunch of birch twigs. When the heat becomes intolerable one cools down under a cold shower or, as in Finland, by jumping into a frozen lake, or perhaps, most delicately, one rolls in powdery snow. Then one repeats the process to satisfaction. Although potentially unsafe, alcoholic drinks often accompany the sauna.
An infrared sauna uses a specific type of heater that creates infrared waves that heat your body directly, instead of just by the air. The temperature in them is much cooler, at around 110 to 130 °F (43 to 54 °C). The amount of sweat that results from each is comparable, though many people report that the lower temperatures in an infrared sauna allow the user to stay inside longer, resulting in longer sauna sessions and therefore more overall sweating
Answered by
deepa
, an ibibo Advisor,
at
11:13 AM on January 29, 2008