Friday March 1st, 2013

http://youtu.be/FDqi4YzCYcw

Serena Williams was among the athletes who joined First Lady Michelle Obama in Chicago on Thursday to help launch her "Let's Move! Active Schools" program, which promotes physical activity for students.

San Francisco 49ers quarterback Colin Kaepernick, U.S. Olympic gold medalists Gabby Douglas, Dominique Dawes, Allyson Felix and Ashton Eaton and former NFL and MLB star Bo Jackson also participated in helping Obama lead a reported 6,000 schoolchildren in a midday workout.

Check out some pictures from the event after the jump.

Serena Williams and Michelle Obama

Serena Williams and Michelle Obama

Serena Williams and Michelle Obama (All photos via Reuters)

SI Apps
We've Got Apps Too
Get expert analysis, unrivaled access, and the award-winning storytelling only SI can provide - from Peter King, Tom Verducci, Lee Jenkins, Seth Davis, and more - delivered straight to you, along with up-to-the-minute news and live scores.