Protein Bar Advanced protein-carbohydrate bar for after exercise. Protein Bar is a throw-in-your-bag source of protein (13g) & carbohydrate (24g). After exercise, your muscles are often low in glycogen (carbohydrate) & you may want to reach for a product that contains high quality carbs for a post-race fix that tastes great. Consuming carbohydrates contributes to recovery of normal muscle function after strenuous exercise. Protein contributes to muscle growth & muscle maintenance. Protein Bar has a light texture & great taste, which makes it easy to use after a tough session.