Dosing off during lectures, help?

Chewing mints/gum or anything sour may help to keep you awake! Most people try caffeine! It does certainly help, but it wears off after a while. So, if you feel really tired, you can try grabbing a cup of coffee on the way to your lecture, and see if that helps! It may help you stay awake for the lecture, but a few hours later, you may find yourself being even more tired than before! But hey, it's the lecture that's important, right? :)