The Chicago Cubs are hosting their annual fan convention this weekend, but judging by their dance skills, players like Kyle Schwarber and Kris Bryant should probably stick to baseball.

The players, who were participating in a kids-only press conference, were joined on stage by 11-year-old Riley Nolan and 9-year-old Lukas Scholz, who got the players to “floss” as part of the event:

“It’s not as easy as it looks!” the Cubs tweeted.

The children are both receiving treatment at Advocate Children’s Hospital, and they were invited onto stage to spend time with both Bryant and Schwarber, as well as Javier Baez and David Bote.