Too much caffiene is really bad for you. I believe it's something like an 8oz. cup of coffee (I'm probably wrong about that though, as I found this out months ago and really didn't pay attention to the amount since I drink no caffiene) has all the caffiene you should have in a day and you should only drink it in the early morning since drinking it later in the day will disrupt sleep patterns, probably leading to more caffiene intake after awhile since you'll feel drained all the time. One cup of coffee a day is supposed to actually be good for you, more than that and you can flush all it's benefits down the toilet. I may not drink caffiene myself, but I know an accounting office full of people who are addicted, and what do you expect when the employees get it for free.