Need caffeine to make it through those long study sessions? Caffeine may help ward off sleepiness, but in excess can cause increased heart rate and blood pressure, increased urination, jitters, anxiety and diarrhea. A reasonable amount is approximately 300mg, about two cups of coffee.

Does that hectic study and final schedule have you skipping meals and then gorging on pizza? Larger portions of food have more calories and take longer to digest leaving you feeling tired and unable to concentrate. Try eating five or six small, low-fat meals and snacks throughout the day to improve your thinking and increase your energy. Good snacks are yogurt, popcorn, vegetables, and fruit.

Eat a good breakfast. Studies show that skipping breakfast detracts from scholastic achievement. When there isn't time to sit down and enjoy your morning meal, grab a piece of fruit!

Drink plenty of water! Sipping eight glasses of water a day can extend your stamina as much as 33 percent.

Exercise! Sports, games, and daily physical activity will help you stay focused and sharp. Daily exercise breaks during finals week, even a walk around campus, will help ease stress.

Try not to be an emotional eater-eat regular meals throughout the day to help decrease excessive stress induced snacking.