Exercise ball a chair because of ergonomic considerations or biomechanical reasons. This large plastic ball, known as a "birth ball", can also be used during labour to aid the descent of the fetal head into the pelvis. Sitting in an upright position will also aid fetal positioning and is more comfortable for the woman. Sitting on the ball with arms placed on a bed, table or otherwise sturdy object for support and gently rocking the hips may help the woman during contractions and aid the natural physiological process of birth. Exercise ball An exercise ball, also known as a Swiss Ball, is
Beach ball Beach ball A beach ball is an inflatable ball for beach and water games. Their large size and light weight take little effort to propel; they travel very slowly and generally must be caught with two hands. They became popular in the beach-themed films of the 1960s starring Annette Funicello and Frankie Avalon. These movies include "Beach Party", "Muscle Beach Party", "Beach Blanket Bingo" and "How to Stuff a Wild Bikini". Beach balls range from hand-sized to over across or larger. They generally have a set of soft plastic panels, with two circular end panels, one with an oral inflation