A protein bar is a convenient snack that is high in protein, often used by athletes and fitness enthusiasts to support muscle recovery and growth. These bars typically contain a mix of protein sources, such as whey, soy, or pea protein, along with carbohydrates, fats, vitamins, and minerals. They come in various flavors and can be found in health food stores, gyms, and supermarkets. Many people choose protein bars as a quick meal replacement or a post-workout snack due to their portability and ease of consumption. Some brands also offer bars that cater to specific dietary needs, such as gluten-free or vegan options, making them accessible to a wider audience.