According to research, using the ball in the later stages of pregnancy can enlarge the pelvic outlet by up to 35 percent, allowing baby to descend more easily.
Leaning forward, pelvic rocking, swaying, hip circles and figure eights, as well as mild bouncing, will aid in the baby's descent. Getting the baby into the proper position for labor is one of the most important advantages of utilizing a birth ball during the last few weeks of pregnancy. The pelvis can be widened by sitting on the ball with your back as straight as possible and your legs spread wide apart.

