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Nastia Liukin: Nerves, stress are high for gymnasts

03:07

As U.S. women’s gymnasts Aly Raisman and Gabby Douglas prepare to go for the gold in the individual all-around, retired gymnasts Mary Lou Retton, Nastia Liukin, and Carly Patterson –  the only American women to achieve that dream – make predictions about who will win and provide insight on the emotions the two young gymnasts are feeling now.