The main function of carbohydrates in the human body is to serve as a primary source of energy. Carbohydrates are broken down into glucose, which is used by the body’s cells for various functions, including brain activity and physical exertion. They are essential for fueling exercise and are critical in maintaining glycogen levels in muscles and the liver. In addition to energy, carbohydrates play a role in metabolism and are necessary for the production of certain hormones. Consuming adequate carbohydrates is vital for athletes and anyone engaged in regular physical activity for optimal performance and recovery.