The Natural Sitting Position is one which supports the natural rounding of a baby's spine, supporting a forward pelvic tilt and proper development of the hip joints. In the Natural Sitting Position, the baby's legs are bent with his knees level with his bellybutton, and spread apart at about a 45 degree angle. This position, also referred to as the Spread-Squat Position, mimics the natural position for optimal joint and spinal support; hence, the Natural Sitting Position.