But it will be a tough challenge:

- I have no doubt that my coaches can get me in top physical shape, says Simone Biles in the American television program "Today", but adds:

- But mentally, to continue for another year. That is what will be challenging for me and all of us. We need to keep fit both mentally and physically.

If Simone Biles had decided to leave, the Tokyo Olympics would have dropped one of their big international poster names. The 23-year-old took four Olympic golds in Rio four years ago and has brought home a total of 19 World Cup golds.