Providing energy for activity
If you take part in lots of physical activity, or regularly enjoy sports and exercise, you will be using up lots of energy. Unless you are trying to lose weight you will need to eat enough food to match your activity level. Carbohydrate is the most important form of fuel for exercise and sports activities. Quite simply, the more active you are - the more carbohydrates your body needs. The body can store carbohydrate in the muscles and liver, but these stores are small so it is important to keep them topped up. If you get tired during physical activity this might be because your carbohydrate stores are low.
Sources of carbohydrate are starchy foods such as breads, pasta, potatoes, pulses, rice and breakfast cereals. Fruit, juices and milk also provide energy in the form of sugars. Both starches and sugars are broken down in the body to provide readily available energy.