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Gymnastics: What Are the Twisties?
International Olympic Committee. "Gymnastics: What Are the Twisties?" Olympics.com, July 27, 2021, https://www.olympics.com/en/news/what-are-the-twisties.
Why this matters here
The IOC's explainer describes the twisties as disorientation that can make gymnastics skills unsafe. The chapter uses that description for the physical phenomenon, not to diagnose Biles beyond her public statements.
