Genre: Information/Explanation

The amount you need to eat changes as you get older . It also depends on how active you are , if you are still growing or not , and how much you already weigh . The more active you are , the more energy you need from food . The energy food gives you is measured in calories . Hector says : " If we eat more food than we need to make energy , the extra food turns to fat and this is stored in our bodies . " Children are much smaller than adults but they are usually very active and still growing . They usually need between 1000 and 2000 calories every day . Adult women need between 2000 and 4000 calories every day and men need between 3000 and 5000 calories , depending on how active they are . Adult bodies are larger than children's so adults need to eat more to produce energy . Older people generally tend to use less energy than other adults . Depending on how active they are , they only need between 1000 and 2000 calories a day .