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
Bouncy ball soccer ball patterns, and so forth) are offered by many companies. Due to their low cost per unit, bouncy balls with logos or other designs are sometimes used as promotional merchandise. Bouncy balls may, by means of fluorescence, chemiluminescence, or motion-activated LEDs, emit light; such balls are called glow balls. Balls composed of many rubber bands, or bouncy balls made of borax, glue, and cornstarch, are sometimes homemade. Bouncy balls are often used in juggling. Bouncy ball A bouncy ball or rubber ball is a spherical toy ball, usually fairly small, made of elastic material which allows it to bounce