Cupping relieves muscle tension by improving blood circulation, which helps to stimulate the "vital energy" of the body.
Cupping is actually considered a form of acupuncture. It’s even used in Chinese hospitals as standard treatment for a variety of health conditions. In ancient Chinese medicine, cupping was thought to mobilize energy and blood flow throughout the body.A partial vacuum is created in cups placed on the skin either by means of heat or suction. This draws up the underlying tissues. When the cup is left in place on the skin for a few minutes, blood stasis is formed and localized healing takes place.