A study by Zoë Francis, a professor of psychology at the University of Fraser Valley, found strikingly similar results. Following more than 300 participants over three weeks, she found that people with non-limited mindsets are more likely to exercise, and less likely to snack, than those with the limited mindsets. Tellingly, the differences are especially pronounced in the evenings, when the demands of the day’s tasks have started to take their toll on those who believe that self-control can easily run down.