A study of gymnasts feet on the balance beam. . One of the most challenging disciplines of the Olympic games sees young gymnasts performing amazing acrobatic feats and landing their somersaults and back flips on a beam with a width of 10cm (4in) standing 124cm (4.07ft) from the ground. Women's Artistic Gymnastics podium training at North Greenwich Arena during the London 2012 Olympic games preparation at the London Olympics. London, UK. 26th July 2012. Photo Tim Clayton
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