- The legs are spread shoulder-length, feet firmly pressed flat against the floor, and the heels are turned as outward as possible at a sharp angle, creating a triangle shape.
- The knees are then bent down to a 90 degree angle and pressed as inward as possible, maintaining a space approximately the size of two fists between them, creating yet another triangle that extends from the buttocks to the heels.
- The back is arched — buttocks pushed out and shoulders back — so that strain is put on the long, vertical muscles that run down both sides of the spine.
- The arms are then stretched out in front, above shoulder-height, with palms pressed outward and fingertips inward.
- The ankles, knees, waist, shoulders, and wrists are locked tight in the yŏkkŭn position, while the shoulders should never get uptight.