Improving Better Blood Circulation And An Overall Improved Metabolism. Activated by heat, the FIR material emits FIR energy that is absorbed by human cells, causing a physical phenomenon called " RESONANCE". Thus the cellular activities are instantly invigorated, resulting in a better blood circulation and an overall improved metabolism. * Fir Sauna Heat Therapy Can Aid In Weight Loss By Speeding Metabolic Processes Of Vital Organs. FIR Sauna heat therapy can aid in weight loss by speeding metabolic processes of vital organs and endocrine glands resulting a substantial caloric loss in a Sauna heat session. * Endocrine Glands Resulting A Substantial Caloric Loss In A Sauna Heat Session. It also increase heart rate and blood circulation, both crucial to maintaining one"s health. The heart rate increases as more blood flow is diverted from the inner organs towards the extremities of the skin without heightening blood pressure. * Bringing Oxygen To Joints And Extremities And Relaxation Of Stiff Muscles. FIR Sauna Heat Therapy allows increase blood circulation to carry great amounts of nutrients to the skin, thus promoting healthy tone, texture and mild cleansing of the skin. * Increasing Heart Rate And Blood Circulation Both Crucial To Maintaining One"s Health. In a case of injury, heat stimulates flow of peripheral blood vessels, bringing oxygen to joints and extremities, relaxation of stiff muscles, speeding the healing of sprains and strains. The increased blood flow helps aching and injured muscles recover faster because the stronger blood flow, the quicker metabolic and toxic waste production purged from the body, through the skin during perspiration. The skin known in Chinese medicine as the third kidney, because it is believed to be responsible for eliminating up to 30% of body waste.