Cupping glasses are commonly used along with acupuncture therapy in Traditional Chinese Medicine. Cupping therapy is a form of local suction massage used on the skin to increase blood flow and promote healing.
Suction is created in the Cupping Glasses by using heat or mechanical devices forming an air tight seal. This action pulls in the soft tissue and draws blood into the area and thus is supposed to release tension of soft tissue (for example resulting from deep scars) and muscles.
Cupping massage is commonly used in therapies in sports and alternative therapies and lately has been promoted by athletes (leaving visible signs of red circles on the skin for a short period of time) in the current competitions in Rio, Brasil.