Carbohydrate is also called carbohydrate, including monosaccharide, disaccharide, polysaccharide cellulose and so on. It is the main energy source of our various life activities. For example, the rice we eat, mainly starch, will be decomposed into glucose in the body, absorbed by the human body, and finally converted into energy needed for body functions, or converted into glycogen for storage in the body. Simply put, carbohydrates provide us with energy.