Subway riders walk through the turnstiles while leaving the U.S. Open in New York September 4, 2007. 'Freshman 15,' the idea that new college students put on 15 pounds of weight in the first year, may be a myth, but young women do gain about five pounds, Canadian researchers report. (Lucas Jackson/Reuters)Reuters - "Freshman 15," the idea that new college students put on 15 pounds of weight in the first year, may be a myth, but young women do gain about five pounds, Canadian researchers report.