The U.S. government prescribes a nutritional pyramid for healthy eating, but in actuality the eating habits of most students more closely resemble a square. Composing the four corners of this student diet are: 1) pizza, as much a part of college life as tuition; 2) cheap eats, a necessity unless you happen to be returning to school after a lucrative career in investment banking; 3) 24-hour diners and other night owl joints, for the inevitable all-nighters pulled...