Just like any other Tuesday, students at school P.S. 161 in Harlem got the biggest suprise ever when superstar Beyoncé stormed through the achool doora to teachthem the moves from her “Move Your Body” video. As part of the “Let’s Move! Flash Workout” campaign to help curb childhood obesity,Beyonce performed in the gym much to the delight of the shocked students, who danced alongside her and took photos.

While Mrs Carter was in Harlem, The First Lady Michelle Obama was in Washington, D.C., learning how to do The Dougie, Running Man, and Cha Cha with students. When asked about Beyonce,she only had good things to say about the “Run the World” singer and their partnership to promote exercise.

“Beyoncé is one of my favorite performers on the planet. And when she agreed to remake her video and do this ‘Let’s Move’ flash workout, I was so excited, because this is what we’ve been talking about—that exercise and moving can be fun,” said Mrs. Obama. “It’s about dancing, it’s about moving.”

Check out Bey in Harlem with the kids below