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Simone Biles' ex-coach reveals gymnast's battle with 'twisties' before winning four gold medals in 2016
These days, Simone Biles has more trophies than she can count. But a decade earlier, she was battling a serious condition that could have prevented her four-gold medal performance in Rio.
These days, Simone Biles has more trophies than she can count. But a decade earlier, she was battling a serious condition that could have prevented her four-gold medal performance in Rio.
