This Demonstration models the number of calories a person burns while walking for a given time. This depends on body weight (in kilograms), walking speed (in miles per hour), and the incline (in grade percent) of the walking path. You can select these three variables with sliders, to show the rate at which calories are being burned. The “calorie burning” equations derived at Hankuk University (Seoul, Korea) can determine the results, similar to a typical treadmill display.