... a very high level of carbohydrate so that they have enough energy throughout the whole race. Marathon runners may often have a carbohydrate overload. This means that they take in more carbohyrate than the RDA. This overload of carbohydrate will provide them with a steady release of energy. There are three main different types of carbohydrate. These different types can be found in different foods. Carbohydrates that take time to be broken down and give a stedy release of energy are called polysaccharides. These are the largest of the carbohydrates and are complex. They are made from long chains of single sugar units called monosaccharides. This type of carbohydrate can be found in foods like bread, pasta, beans, potato, rice and cereals. During a carbohydrate overload an athlete would eat plenty of this type of food. This type of carbohydrate is perfect for giving a steady release of energy. This ...

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