If you knew you had to walk briskly for two hours to work off the energy in a burger, or for half an hour to work off a salad, which would you choose?
Most of us would go for the salad to avoid the longer walk, a new study suggests. Three-hundred men and women were asked to choose from menus that featured either kilojoule counts, the amount of brisk walking required to burn off each item, or nothing at all. They found there was no difference in the choices made by people with menus displaying the kilojoule counts and menus with no signage. However, the people who had the exercise-related menu ordered items with significantly fewer kilojoules and ate less, too. So, the threat of exercise could prove to be an effective deterrent to overeating or making unhealthy food choices.