First Lady Michelle Obama‘s appearance on NBC’s “Late Night” with Jimmy Fallon got physical this week, with Fallon and the first lady turning the set into a playground and doing push-ups, twirling hula-hoops, and playing tug-of-war and dodge ball – with Mrs. Obama winning the “climactic potato sack race” at the end. As part of her recent media blitz to promote the second anniversary of her Let’s Move! campaign.