Acupuncture is the most well known of the Eastern medical techniques. In traditional treatment it involves the insertion of hair thin needles at specific points that allow a practitioner to manipulate the qi and hence the physiology and functions of the human body. The exact bio-mechanism is still a mystery to modern science, but many interesting theories exist. Acupoints used can be meridian points that are often used for systemic issues, or trigger and pain points for muscular issues.. Electrical stimulation is frequently and effectively used for the latter and involves a micro-current to stimulate the mal-functioning tissues.