Researchers “say that having a winning NFL football team increases the incomes of the people who live and work in its hometown by as much as $120 a year. And while the study doesn’t identify exactly what causes the boost, the authors point to psychological literature suggesting that winning fans are at once harder workers and bigger spenders. In short, buoyed by the team’s success, we work longer hours, take bigger risks, and shop more avidly, all of which helps the local economy.”