Most of the standard acupuncture layouts in Korea use only four needles. The four needles are split two and two – two needles sedate or reduce excess Qi in one organ system, while two other needles tonify or increase Qi in a second organ system. Korean hand acupuncture, the unique Korean medicine acupuncture style, is performed under the theory that a microsystem, where the whole body is reflected in just one area, is found on the hands. Conditions of the body, wherever they might be, from head to toe, can be treated by using points in one microsystem.