Great article Susan! I am well, well past college years but when I was in school I took long walks every day. Not only did it help me not to gain the freshman 15 (pounds), it also helped to clear my head so that I could concentrate on my studies.
Ohio State is a huge campus so there were plenty of areas to walk both on and off campus. I would just start out in a direction and find fascinating and peaceful areas. Of course that is probably when it was a lot safer to walk alone, but I do encourage walking, it relaxes the mind - just be sure to stay safe!