The infrared light lamp is used when getting acupuncture. The reason for using infrared light lamps is that they usually have a heat treatment effect. It increases blood flow, expands blood vessels, speeds up blood circulation in the area, and activates tissue metabolism that helps healing. When the blood circulation is promoted, waste products and tissue fragments from the area are discharges and inflammation is quickly healed. It also stretches hard tissues softly and increases the elasticity of the joints to make the affected area flexible. Heat itself has a pain–reducing effect; applying heat to a sore area temporarily relieves pain. As the muscles relax and the pain subsides, tension is released and the mind is relaxed.