Cupping therapy is an ancient form of alternative medicine in which a therapist puts special cups on your skin for a few minutes to create suction. The therapists puts a flammable substance such as alcohol, herbs, or paper in a cup and set it on fire. As the fire goes out, he puts the cup upside down on your skin. As the air inside the cup cools, it creates a vacuum. This causes your skin to rise and redden as your blood vessels expand. The purpose of this technique is to reduce muscle pain, inflammation, increase blood flow while offer you relaxation as a type of deep-tissue massage.