Problems of High Blood Pressure, Heart Disease, Bad Circulation, Muscle Injuries and Cramps can be severely limited through Infrared Sauna Therapy. During a 15-30 minute sauna session, the heart rate increases by 50-75%. This provides the same metabolic result as physical exercise. Blood vessels become more flexible and there is increased circulation to the extremities. Far Infrared Heat increases the capillary size in the body which in turn speeds the flow of blood, regeneration, circulation and increases the flow of oxygen to all parts of the body. Blood begins to circulate throughout the body at an increased rate. It carries nutrients (food) and oxygen to all the cells of the body. The blood flow also carries away waste products and carbon dioxide, along with many other toxic substances being released from the body. The blood circulating through the digestive system picks up digested food products and carries them to the liver to be used or stored. Effective blood circulation is critical for the human body to operate correctly.