Carrots are going to be the best choice here. They are rich in vitamin A, which is an awesome powerful amazingly magnificent super hero nutrient! =D
A better choice would be veggies and fruits. Snacks with proteins such as protein bars and shakes.
Muscles are also necessary for movement: They're the masses of tough, elastic tissue that pull our bones when we move. Together, our bones, muscles, and joints — along with tendons, ligaments, and cartilage — form our musculoskeletal system and enable us to do everyday physical activities.