Dr. Oz walks you through the anatomy of a hernia. Heavy lifting, smoking, coughing and constipation can put you at risk. Learn prevention and know when to seek treatment.

Sponsored by Ethicon, Inc. - for more information, click here. Animation produced by Visible Productions Inc.

After years of trying to get pregnant, doctors told Kelsi Pierce it would be near impossible for her to conceive a child. However, Kelsi got the surprise of her life when her mom volunteered to be her surrogate — and she found out she, too, was pregnant!