It's sophomore year, and suddenly you're finding that your jeans don't fit like they used to? You're not alone. Although so-called "freshman 15" is an exaggeration, most students gain weight in college. Stress, a less-active life style, and those buffet-style cafeterias lead many students to pack on pounds. A Rutgers University study showed that if students keep up their freshman weight gain, they would gain 27 pounds by graduation.