U.S. health experts declared obesity an epidemic over a decade ago. Schools have tried to implement prevention programs for students, but as budgets shrink, educating students about obesity is increasingly falling to classroom instructors, including science teachers. The good news is that obesity-related classroom activities can be engaging, and Michelle Obama's Let's Move campaign offers new resources to help. This Q&A style column provides up-to-date information on current health topics--helping students (and teachers) make healthy choices. The author describes a classroom activity that focuses on sugar and fats in one's food and drink, which helps start the discussion on obesity.