Carbohydrates are the body's main source of energy, or calories. We need carbs for our brains to think, our muscles to work, and to supply us with essential vitamins, minerals, and fiber.
Carbohydrates are also the most important nutrient for losing fat and building muscle .
The complex carbs we get from grain products, vegetables, and fruits are broken down to sugars during digestion. To the body, all sugars look and act alike, regardless of their source. As mentioned earlier, carbohydrates are a beneficial and necessary part of a healthy weight loss plan. Almost all foods high in complex carbohydrates are low in fat, and high in fiber. But we all know many who have difficulty losing weight on low fat diet.