Human: I've heard that a certain kind of acupuncture can help cure headaches. How does it work? Assistant: 
Acupuncture is an ancient Chinese medical practice involving the insertion of fine needles into specific points on the body. These points are believed to correspond to different parts of the body and their associated systems, including the head and neck. The needles stimulate the body’s natural healing response by triggering the release of endorphins, hormones which reduce pain. Acupuncture also helps to improve circulation and balance energy in the body.