The high temperatures of a traditional sauna or the direct infrared heat of a Far-Infrared Sauna both promote healthy sweating. When our bodies try to regulate their temperature by releasing sweat to help cool the skin, they are releasing mostly water. But depending on the sauna and the person, the sweat can contain between 5% and 20% non-water compounds. This non-water potion of the body's sweat is made up of cholesterol, fat-soluable toxins, toxic heavy metals, sulfuric acid, sodium, ammonia and uric acid.
These non-water compounds found in your sweat while using a sauna are not found in the same proportion in sweat generated from regular excercise!
"Sweat therapy using saunas has been extensively researched and shown to be effective at lowering levels of fat soluble chemicals. One study observed an average reduction of 21.3% of 16 different chemicals in adipose tissue samples following sauna therapy. " Read More...
Excerpt from infraredhealth.com.
The hot water of a hot tub also promotes the same healthy sweating.
"Extended immersion in hot water encourages the body’s natural process of detoxification through sweating. Exposure at length to warm temperatures, whether it be a steam bath, sauna, bikram yoga room, or the hot water in a tub or spa, will increase circulation, promote cell renewal, and eliminate toxins through perspiration and lymphatic drainage. All that while you just sit back and relax.
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From hotwaterwellness.com