Cupping therapy is usually a painless treatment; however, it can leave light red to dark purple circles which can last between 2days to 2weeks. Cupping is a decompressing therapy where small cups are applied to the body, and a vacuum is created which pulls the skin and layers of muscle up into the cup. The benefits of cupping are relaxation of tight muscles, pain relief, promotion of blood flow to the affected area and quicker recovery after training cupping. works well on the back neck and legs.