Suzanne Girard Eberle, MS, RD, CSSD, author of Endurance Sports Nutrition-Second Edition, is a board-certified sports dietitian in Portland, Oregon. A former USA Track and Field 5,000-meter track champion with PRs ranging from 4:28 (mile) to 50:12 (15K), she coaches teens and adults of all shapes, sizes and athletic abilities on establishing high-performance eating habits.