The surprise visit to P.S. 161 in east Harlem on Tuesday was part of first lady Michelle Obama's "Let's Move" campaign.
About 85 students were participating in a national simulcast of "Let's Move! Flash Workout" -- Beyonce's new video -- when the singer showed up. Beyonce, wearing stilettos and a T-shirt emblazoned with "Let's Move," joined the students in the dance exercise routine.
"Let's Move! Flash Workout out is a re-written version of Beyonce's hit "Get Me Bodied." Beyonce says she wants to promote the benefits of healthy eating and exercise, but make it fun.
