Cupping therapy is an ancient form of alternative medicine. Your acupuncturist puts a flammable substance such as alcohol, herbs or paper in a special glass cup and set it on fire. As the fire goes out, she puts the cups upside down on your skin to create suction and leave them there for 10 minutes. People get it for many purposes, including to help with pain, inflammation, increasing blood flow, relaxation and wellness, and as a type of deep- tissue massage.