“According to Yann Cornil and Pierre Chandon of the European business school Insead, saturated-fat consumption spikes by 16% for fans after the loss of a beloved NFL team. After a victory, fat consumption goes down by 9%, and overall calorie consumption by 5%. The study, published online in August in Psychological Science, looked at intake data from American households in 2004 and 2005 during the NFL season. "There's research showing that when something good happens to your life, you're more future-oriented," says Mr. Cornil, who studies the link between consumer behavior and obesity. "So if you have good news and you feel good about yourself, you want to keep feeling good about yourself, you have an increased motivation to follow your diet, exercise, to go to the gym." Feeling bad elevates short-term goals like scrambling for comfort food. ”