steam therapy:: sweating is therapeutic, but so too are the other physiological effects of steam therapy. dramatic effects derive from the circulatory changes caused by the intense heat exposure. the heart rate can increase as much as 50% to 75% during a steam bath session. with in just a few minutes there is an increase of cardiac output, increased blood flow to the skin produced by vasodilatation, and decreased blood flow to the internal organs. the increased blood flow brings vital nutrients to skin and subcutaneous tissue, stimulating cellular activity and growth. the parts of the skin that normally suffer from poor circulation benefit especially from this treatment, since the increased blood flow supplies it with extra nutrients and oxygen, any increase in the metabolic rate burns calories, improves circulation, promotes water-weight loss, and beautifies skin. the body also detoxifies. because of its role in elimination of toxins the skin is sometimes referred to as the " third kidney. "the heat of a steam bath speeds up the chemical processes in the body, making steam therapy one of the simplest and most comfortable ways to rid the body of accumulated toxins. perspiration allows excretion of toxins and impurities through the skin, helping the kidneys and liver to detoxify the blood.