Simone Biles is opening up about her mental health struggles. The 24-year-old gymnast appeared on Thursday's episode of the show, and revealed that she's still «scared to do gymnastics» after pulling out of most of her events during the Tokyo Olympics due to a disorienting condition known as «the twisties.»Biles' admission comes amid her Gold Over America Tour, where she and other gymnasts perform in different venues across the country.