Simone Biles suffered from the “twisties” in the run-up to the 2016 Olympics, five years before the condition severely disrupted her performance at the Tokyo Games.
Aimee Boorman, Biles’s longtime coach, outlines the story in her new book, The Balance: My Years Coaching Simone Biles. The twisties cause gymnasts to lose their orientation while in the air, a dangerous situation in a sp...
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