Any ideas for a college biology research project?

I'm working with two others on a community college biology research project that's due the beginning of May. My group is leaning towards something health/nutrition/medicine based. As far as level of difficulty goes, it has to be harder than a high school science fair project, but we're not trying to do research to find a cure for cancer here!!! :D So far, all we have is stress level of students/faculty on campus and eating habits during the weeks surrounding midterms. We need more ideas!