![](http://www.alamy.com/thumbs/6/97674C82-AC97-4F56-BE91-F3AA2E8D9CC0/2ADJPDG.jpg)
Pregnant woman sitting on a large inflatable rubber ball, known as a birthing ball, that is identical to and has a similar function to exercise balls.
Pregnant woman sitting on a large inflatable rubber ball, known as a birthing ball, that is identical to and has a similar function to exercise balls. Sitting on the ball is thought to encourage a posture that helps the baby settle into the correct position for birth. The ball is also used as an aid for prenatal exercises. This woman is 30 weeks pregnant. A full-term pregnancy lasts between 37 and 42 weeks.
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Photo credit: © IAN BODDY/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
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