Brisk walking burns 5 calories per minute, stair climbing can burn 10 calories a minute, and jumping rope burns 12.5 calories a minute.

Our bodies use food energy in order to carry out the processes needed to stay alive.

A moderately active adolescent girl needs about 1,900 calories a day.

A moderately active adolescent boy will need 2,200 calories daily.

If you exercise, you will use more calories, and the longer and harder you exercise the more calories you will burn.

You may hear people talking about watching the calories they eat because they do not want to gain weight.

A person will have to burn 3,500 calories to lose one pound (454.5 grams) of weight.