Choose Health: Food, Fun, and Fitness (CHFFF) is an award-winning, comprehensive nutrition and fitness curriculum composed of six hands-on lessons for 8-12-year-olds (3rd-6th graders). Developed by Cornell University’s Division of Nutritional Sciences in collaboration with Cornell Cooperative Extension’s 4-H Youth Development Program, CHFFF uses experiential learning to teach healthy eating and active play, targeting behaviors research shows to be most important for preventing childhood obesity and chronic disease. Topics include replacing sweetened drinks with low-fat milk and water, eating more vegetables, fruits, and whole grains, eating fewer high-fat and high-sugar foods, and playing actively 60 minutes a day. CHFFF is intended for use by Cooperative Extension educators and others with a background in nutrition and experience working with youth, and is aimed at a suggested group size of 10-12 children. A unique characteristic of CHFFF is that it was also designed for use in our partner program Choose Health Action Teens (CHAT), in which teens are trained to co-teach CHFFF to younger youth.