Walking is a great way to prepare the body for birth throughout a woman's entire pregnancy. Giving Birth Naturally states that while natural induction methods may help to soften, efface and dilate the cervix in preparation for birth, labor does not begin on its own unless the body is ready.
Near the end of pregnancy, upright positions help babies move into an optimal position for birth. ModernMom explains that if contractions have begun, walking makes them more frequent and stronger. A walk in the neighborhood or at the mall, housework and climbing stairs are all good forms of exercise.
Sitting and moving on an exercise ball is another way to help the baby move into an optimal position and encourage contractions. Spinning Babies suggests doing vigorous circles while sitting on a ball. This action helps the baby's head move onto the cervix, which can strengthen contractions.