Cupping
Cupping is a modality of treatment in Traditional Chinese Medicine. It is using of glass, bamboo or plastic cups to create a vacuum in order to increase circulation of blood to the superficial skin.
It is commonly used at the back, low back and shoulders. Generally patients feel a warm, comfortable pressure at the site.
It will make a bruise which will remain for a few days. In 2016 Olympics probably you have noticed round bruises of cupping at the back and shoulder of some champions even American athletes. It is a very effective method of relieving pain by bringing blood to the surface of the body.