Suffer from Hypertension, Stiff Muscles, Headaches and Nausea, than Infrared Sauna Therapy may be beneficial. Sweating is as essential to our health as eating and breathing. It accomplishes three important things: rids the body of wastes, regulates the critical temperature of the body at 37 degrees C (98.6 degrees F), and helps keep the skin clean and pliant. Due to the conveniences of our modern world, many people simply don't sweat enough, making sweat bathing particularly desirable during these times. Antiperspirants, artificial environments, smog, synthetic clothing, and a physically idle lifestyle all conspire to clog skin pores and inhibit the healthy flow of sweat. These detrimental effects are reversed through sauna therapy. As you relax in a sauna, heat sensitive nerve endings produce acetylcholine, a chemical which alerts the 2.3 million sweat glands embedded in the skin. The outcome of this reaction is that during a 15-minute sauna session the body can excrete up to one liter of sweat (depending upon the individual, normal daily rates range from 0.5 to 1.5 liters). The excreted sweat is known as Eccrine sweat. One of its chief functions is to cool the body by evaporation, but it also clears clogged pores and gives the skin a chance to breath. Sweat also has the function of being a judicious garbage collector. During a 15-minute sauna session, sweating can perform the heavy metal excretion that would take the kidneys up to 24 hours. Ninety-nine percent of what sweat brings to the surface of the skin is water, but the remaining one percent is mostly undesirable wastes. Another benefit is that excessive salt carried by sweat is generally believed to be beneficial for cases of mild hypertension. Sweating also rids the body of Urea, a metabolic by-product, which if not disposed of regularly, can cause headaches, nausea and, in extreme cases, vomiting, coma and even death. Sweating is such an effective de-toxifier that some physicians recommend home saunas to supplement kidney machines. Sweat also draws out lactic acid which causes stiff muscles and contributes to general fatigue. Sweat flushes out toxic metals such as copper, lead, zinc and mercury which the body absorbs in polluted environments.