The primary role of carbohydrates in the human body is to provide a readily available source of energy. They serve as the main fuel for the brain and muscles during physical activity. Carbohydrates are broken down into glucose, which is used immediately for energy or stored as glycogen in the liver and muscles for later use. Additionally, carbohydrates are crucial for proper metabolic function, supporting muscle recovery and performance during exercise. Including complex carbohydrates in the diet, such as whole grains, fruits, and vegetables, is essential for maintaining energy levels and overall health.