The Olympic spotlight shone on Simone Biles, Michael Phelps, Katie Ledecky and Chad le Clo on day four of the Rio Games.

Michael Phelps once opened up about the significance of mental health shortly after the most decorated gymnast of all time, Simone Biles, withdrew before the finals of the Tokyo Olympics.

In an excerpt from her new book via ESPN, "The Balance: My Years Coaching Simone Biles," Boorman detailed how she first got the twisties in the lead up to the Rio Olympics in 2016. "Yep ...