Every person needs water and a diet of healthy foods. These foods should contain some fat, some fiber, a little salt and so on.

People need energy     1 . They eat different kinds of food which change into energy. The energy is    2  in calories. Even when you  3  , you are using energy – about 65 calories an hour.     4  you are at school, or walking home, your body is burning up 100 calories an hour. When playing football or basketball, you        5    be using 400 calories an hour. On Sports Day, during the relay race, you will use most of all,     6  as much as 650 calories an hour.