Protein balls are small, bite-sized snacks made primarily from protein-rich ingredients. They often include items like nut butter, protein powder, and oats, which provide a good balance of protein, healthy fats, and carbohydrates. These snacks are popular among fitness enthusiasts and those looking for a quick energy boost. Typically, protein balls are no-bake and can be easily customized with various flavors and add-ins, such as chocolate chips, dried fruit, or seeds. They are convenient for on-the-go snacking and can be stored in the refrigerator for several days, making them a practical choice for busy lifestyles.