I have also been seen running up the steps late for a class because I stayed up doing something I should have done weeks ago. There are ways of dealing with all the stress you are feeling right now. One good way is to start studying early for finals and to any papers you may have due. This will help get you to bed earlier, then you won't need all that caffeine the next day to wake you up. Another good way to beat the stress is to eat right and get some exercise.
Exercise is a great way to get rid of stress.
The most important thing to do is try to make time to relax. Also, if you finish something early, give yourself a reward, like 30 minutes of watching television. I hope that these tips give you some relief from all the stress you are feeling and that I won't see as many blank faces on campus. Try to smile, and remember that it is almost over. I plan on taking some of my own advice.