The pelvic clock is a very subtle exercise on the mat. Imagine that you have a watch lying in the bottom of your stomach. Twelve hours is the navel, 6 hours is the upper part of the pubic bone. Your pelvic bones are in positions 9 and 3. You engage the abdominal press to move the pelvis just a couple of centimeters or so in each direction. The goal is to make this movement smoothly with the help of the press, not the back. You isolate the movement of the pelvis so that the upper body remains motionless and relaxed, and the hip joints allow the pelvis to move without affecting the legs. Use this exercise to better understand the position of the abs, pelvis and spine.