Carbohydrates are the body's main source of energy. They are easily digested and broken down into glucose, which the body uses to perform its numerous functions. In contrast, protein and fat are more difficult to digest and are needed to build and repair tissues and cells in the body. For this reason, most of your energy should come from carbohydrates.
These are the food items that contain the most carbohydrates: Pasta, bread, rice, milk, potatoes, fruits, vegetables, cereals, and popcorn are all high in carbohydrates.