People who go to bed too late or sleep in will find themselves eating more calories in the evening, according to a new study. Research from Chicago's Northwestern University discovered that such individuals will also eat more fast food and fewer fruits and vegetables than those who go to bed earlier. The study of 51 people with an average age of 30, which looked into trends of 23 late sleepers and 28 regular sleepers, concluded that late sleepers ate 248 more calories a day than those who had better sleep etiquette. Furthermore, twice as much fast food and half as many fruits and vegetables were eaten. Co-lead author on the report, Kathryn Reid, said of the team's findings: "We don't know if late sleepers consume the extra calories because they prefer more high-calorie foods or because there are less healthful options at night." The study is set to be published in the Obesity journal this summer.