For students all around the world December is a bittersweet month. On the one hand Christmas, Hanukkah, New Years and all of those holidays tend to brighten our spirits, and move our thoughts from our troubles. However, on the other hand we have finals, papers, and the culmination of a semester's worth of studies to deal with. So while we smile at the thought of going home for the holidays, enjoying the food, time off, and warmth and love from our families and close friends, we also cringe and stress out about exams.
Well, I have no quick fix. If you forget about the exams and embrace the holidays your scores will suffer and you'll probably screw yourself over for the future. If you forget about the holidays and just concentrate on the exams you'll probably go insane and end up eating your hand or falling into a trance while staring at your computer screen. So I recommend a balance. Everyone's is different. Just remember, "stressed" is just "desserts" spelled backwards.
Just don't eat your hands.