The Tredz Cakeulator is based on cycling at an average speed of about 12mph and calorie burn for fairly average sort of people who ride to work and back five days a week. Please note that the creators of the Tredz Cakeulator are neither mathematicians, diaticians, sports scientists, nor physicists; we are merely cyclists who like to be told we can eat more cake when we cycle a long, long way. The creators of the Tredz Cakeulator bear no responsibility for sugar rush, bloatedness, weight gain, or other adverse cake-related effects caused by the use or abuse of the Cakeulator.