To anyone watching Simone Biles perform, the 28-year-old is a literal machine. But the most decorated gymnast in history is sharing the truth about the impact an event like the 2024 Paris Olympics takes on even the most practiced athlete’s body.

The U.S. superstar won her fifth, sixth and seventh golds in Paris but is yet to decide whether she will defend her titles in 2028.

Well, we know that Simone Biles will be physically at the 2028 Olympics in Los Angeles. What we don’t know is whether the undisputed GOAT of gymnastics will be there as a spectator or as a competitor, because Biles doesn’t know herself.