In brief: With the recent plethora of research indicating that food affects performance, athletes are eager to learn how to eat to win. They recognize that sound nutrition practices are an integral part of their training program. Hence, sports-active people of all ages and athletic abilities are increasingly receptive to professional nutrition advice. This article presents two case reports of athletes who consulted the author for advice regarding diverse problems: One wanted to stabilize her blood sugar and lose weight; the other wished to gain weight. Both wanted to enhance their athletic performance.