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
Ball pit Ball pit A ball pit (originally called "ball crawl" and also known as a ball pool or ball pond) is a padded box or pool filled with small colorful hollow plastic balls generally no larger than in diameter. Instead of balls, other spherical objects can be used, such as balloons. It is typically employed as a recreation and exercise for children. Ball pits are often found at nurseries, carnivals, amusement parks, fun centers, fast-food restaurants, and large video arcades. Chuck E. Cheese's and (now defunct) Discovery Zone formerly had ball pits and they were frequently incorporated into larger play structures,