(Reuters) - Four-times Olympic gold medallist Simone Biles told New York Magazine that she should have quit gymnastics "way before Tokyo," where she suffered from a case of "twisties" that derailed her attempt at a record haul of six golds.

The 24-year-old American dropped out of the opening event at the Summer Games, the team competition in July, after just one vault and later said she was struggling with the "twisties," a serious mental block in which gymnasts lose their sense of orientation.