Holding the Hunger Games Hostage at the Gym: An Evaluation of Temptation Bundling

This field experiment by Milkman, Minson, and Volpp introduces "temptation bundling," a commitment device that pairs a tempting "want" activity (listening to captivating audiobooks) with a beneficial but under-engaged "should" behavior (exercising), by restricting gym-goers' access to the audiobooks to only the gym.