Superstar U.S. gymnast Simone Biles pulled out of a second event at the Tokyo Olympics, withdrawing from the individual all-around competition to focus on her mental health. #SimoneBiles #Olympics #News #Reuters #Tokyo2020 #gymnastics Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en