Beyoncé crashed a New York City dance class to “Move Your Body” and danced along. After the students danced for a minute, Beyoncé ran into the gym and joined in. The pupils were from K-8 public school Don Pedro Albizu Campos.

It was gratifying when the R&B megastar entered the room and energized the students. The kids’ squeals and ear-to-ear smiles when she arrived said it all, and Beyoncé’s wide smile showed she was having as much fun as they were. The video became viral after New York radio station WBLS published it on their YouTube account and has been viewed 79 million times. See it below.

Beyoncé and the students danced to “Move Your Body,” a revised version of “Get Me Bodied” from her second solo studio album B’Day. Star reworked Platinum hit for national Let’s Move! campaign. First Lady Michelle Obama and the National Association of Broadcasters Education Foundation created Let’s Move! to tackle child obesity via physical activity.

The clip shows how “Move Your Body” changes the lyrics to include a lively workout routine with jumping, jogging, and high-energy movement. Beyoncé made working out interesting for youngsters, which is impressive as we all know it can be boring. Watch the singer’s official music video, which includes a group workout, below.