Us Weekly has affiliate partnerships. We receive compensation when you click on a link and make a purchase. Learn more! Parents understand the daily battle of trying to get their kids to eat enough of the good stuff — and we’re not talking about cookies. Protein is particularly tough, but it’s such an important part of a well-rounded diet. Hiya is changing the game with a kid-focused protein powder containing grass-fed whey protein, prebiotics and healthy fats. Hiya aimed to create something “simple and trustworthy,” according to a press release, which is what led the brand to introduce the Kids Daily Growth + Protein. Formulated for…