This is an excerpt from Cool 2B Real, which "is about real girls like you! Whether you're in school, playing sports or just having fun, strive to be the best you can be!" It offers this "Tip on Keepin' Fit":
Eat a variety of foods.
By eating foods like beef, bagels, yogurt, vegetables and fruit, you will stay on top of your game.
(Emphasis added.) You may or may not be surprised to learn that the site is "Funded by America's Beef Producers SM."