Simone Biles on Wednesday thanked the gym she visited in secret to overcome a bout of "the twisties" that threatened to end her Olympics in Tokyo before she battled back to win a bronze on the balance beam.

Biles spent several days out of the spotlight at the training facilities of Juntendo University where she was able to overcome the disorientation she was experiencing while performing her gravity-defying skills, the Wall Street Journal reported on Tuesday.

"I'll forever be thankful for Juntendo for allowing me to come train separately to try to get my skills back," she wrote on Twitter.