Acupuncture is a traditional Chinese medical technique for unblocking Qi (ch’i or qi) by inserting needles at particular points on the body to balance the opposing forces of yin and yang. In Acupuncture Qi is believed to flow through the body along 14 main pathways called meridians. When yin and yang are in harmony, chi flows freely within the body and a person is healthy. When a person is sick, diseased, or injured, there is an obstruction of Qi along one or more meridians. Traditional Chinese medicine has identified some 365 specific acupuncture points where needles are to be inserted for specific effects.