(CNN)In a series of Instagram stories, Simone Biles shared videos -- which since have been deleted -- of herself struggling with her dismounts on the uneven bars and answering questions about having the twisties, a mental block in gymnastics where competitors lose track of their positioning midair.
Simone Biles says she still has the 'twisties' and it's impacting her on the 4 individual events
Biles, who withdrew during the team final at the Summer Olympics and then withdrew ahead of Thursday's all-round final, is scheduled to compete in the four individual events of vault, bars, balance beam and floor exercise.
Biles said the recent bout of the twisties began the morning after the preliminary competition. She said she'd been affected by the twisties before, saying in a post, "btw it's never transferred to bars & beam for me. It strictly likes floor & vault." But then she added, "but this time it's literally on every event. which sucks... really bad."