In the other direction, I'd like to see food labels list "miles" instead of "calories". I'll look at something that's 250 (kilo)calories and say to myself "that's an extra 2.5 miles I have to run" and dissuade myself from eating it.
The amount of energy in even a small amount of food is rather remarkable.
Probably someone read Nudge [0] and thought this was a good idea. It would be, if it was optional and also included a variety of choices instead of the cupcakes (beer, hamburgers, oreos)