Answer:
Protein containing food like meat, egg and chicken etc is the muscle building food.
Explanation: Protein containing food such as meat is the food substance that contains the nutritive materials which helps in the build of muscles in the human body , but does not contain the macromolecules that provides quick energy. Meat which is a good source of protein and we know that protein is the main nutrient which is responsible for the building of muscles in the human body.