sandwich theorem
Well it can't save me much money, so that reason is out. In fact sandwiches can be expensive, with Science canteen topping the rank selling branded Four Leaves sandwiches, followed closely by Engin canteen selling @$1 and the most economical of all is from Arts canteen @70cents. 'Cos Arts faculty teaches Economics. -_-"
Scientists at Georgia State University advise active people to eat frequently (about every three hours) to accelerate metabolism and maintain steady energy levels throughout the day. In another article, published in British Medical Journal, says that six or more meals/snacks each day have beneficial total and LDL-cholesterol lowering benefits when compared to those that consumed two or fewer meals each day.
Lazy to find seats, lazy to queue up for food, lazy to find people to have lunch with... sandwiches seem to be my lazy solution. Why not?
(by the way there was once I bought 4 sandwiches from Engin canteen, then I walked to Science faculty for lesson. I ate 2 while walking, then when I reached Science fac I was still hungry, so I finished the remaining 2, and still felt hungry. This diet doesn't work everyday)

















6 small meals? sounds like a dieting plan. "accelerate metabolism" - sounds even more like a dieting plan to me now.
you don't need to be on a diet, please eat FULL MEALS. then maybe you can consider adding in another 2 small meals.. =P
And sandwiches aren't filling at all. I think arts sandwiches quite ex liao lor, the filling so little can! ok, maybe i'm greedy...