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Here’s how you can fill in the blanks:

We need (23) **food** or energy to do the things we do every day such as walking, (24) **riding** a bike and even sleeping! We get calories from the (25) **food** we eat. If we eat too many, we can get fat. If we don't eat enough, we feel tired and weak. People should have between 1,600 and 2,500 calories a day to stay in shape. Sports and activities like riding a bike and running use (26) **more** of calories. Sleeping and watching TV use (27) **less**. Do you think you are eating more or less calories than you need?