On this week's KPR Presents, we look at some groundbreaking research on the link between physical activity and academic achievement. Dr. Joe Donnelly of the Center for Physical Activity and Weight Management at the University of Kansas presented those findings at the annual Obesity Conference held last week in Overland Park. We'll hear from Donnelly, Dr. Mark Thompson of Kansas Coordinated School Health, as well as a repeat broadcast of First Lady Michelle Obama's "Let's Move" address to the NAACP.