given that my exams are fairly spread out for trials, (most of the time i have a +3day break b/w exams except for the English Papers), i dont think its all too bad.
Its not like i have an entire fridge of redbulls *cough*
Lol, how many can you fit in one fridge? Just out of curiosity.
Caffeine is an addictive substance, which means that even if it is ineffectual in anything but giving you a small endorphin burst, you will begin to rely on it for your everyday life. If you're drinking that much to try and help yourself do better in your tests, I have to tell you the caffeine itself isn't actually doing much of anything - it's all you relying on it for the boost. Apples actually give you more energy and alertness than caffeine, fun fact.
After trials, why not try and ween yourself off of it? Drink water or juice for a change, see what happens? All that's going to happen is an ever-increasing reliance on that stuff, and ultimately, no matter how good it feels now, it can be detrimental in the end.