In this Tuesday, Nov. 1, 2011 photo, first lady Michelle Obama sings and dances to exercises with staff, parents and children as she visits the Royal
In this Tuesday, Nov. 1, 2011 photo, first lady Michelle Obama sings and dances to exercises with staff, parents and children as she visits the Royal Castle Child Development Center, as part of the "Lets Move!" initiative in New Orleans, La. In 18 states, there were at least slight drops in obesity for low-income preschoolers, health officials said Tuesday, Aug. 6, 2013. (AP Photo/Gerald Herbert) (Gerald Herbert/)