Simone Biles still struggling with ‘twisties,’ raising new doubts about returning to action 

Simone Biles is having the “twisties” on all four events, something she’s never experienced before, and it raises new doubts about whether she’ll be able to compete again at the Tokyo Olympics.

https://www.usatoday.com/story/sports/olympics/2021/07/30/simone-biles-instagram-shares-video-answers-question-twisties/5426358001/