In a typical cupping session, glass cups are warmed using a cotton ball or other flammable substance, which is soaked in alcohol, let, then placed inside the cup. Burning a substance inside the cup removes all the oxygen, which creates a vacuum.
As the substance burns, the cup is turned upside-down so that the practitioner can place the cup over a specific area. The vacuum created by the lack of oxygen anchors the cup to the skin and pulls it upward on the inside of the glass as the air inside the jar cools. Drawing up the skin is believed to open up the skin's pores, which helps to stimulate circulation, balances and realigns the flow of energy, breaks up obstructions, and creates an avenue for toxins to be drawn out of the body.
Moxibustion is a traditional Chinese medicine technique that involves the burning of mugwort, a small, spongy herb, to facilitate healing. Moxibustion has been used throughout Asia for thousands of years; in fact, the actual Chinese character for acupuncture, translated literally, means "acupuncture-moxibustion." The purpose of moxibustion, as with most forms of traditional Chinese medicine, is to strengthen the blood, stimulate the flow of energy, and maintain general health.