College students who watched a seven-minute clip of the TV show "The Biggest Loser" showed worse attitudes toward exercise compared with those who watched an "American Idol" clip, results that were consistent regardless of the students' exercise levels, a study found. The findings suggest that shows such as "The Biggest Loser" may discourage people from exercising, rather than motivate them, researchers said. The results will appear in the American Journal of Health Behavior.