A traditional Chinese medicine, acupuncture is most commonly used to treat pain. Acupuncture involves the insertion of very thin needles through your skin at strategic points on your body. Western practitioners consider acupuncture points to stimulate nerves, muscles, and connective tissue. It is believed that the stimulation boosts the body's natural painkillers. Acupuncture, the Chinese believe, is for balancing the flow of energy or life force – chi (chee) – believed to flow through the body’s pathways. By inserting needles into specific points along these meridians, acupuncture practitioners believe that your energy flow will re-balance.