Errr, shame on me for raining on anyones parade here, but the most recent studies show that caffeine is actually GOOD for ya! I'm not talking bucketloads per day....more the equivalent of 2 -3 or 4 cups of coffee. Too much of ANYthing is potentially bad and caffeine is no exception, but, the latest studies show caffeine might actually protect against the onset of Alzheimers disease. Of course if you disregard this advice and stay off caffeine altogether, you'll have the luxury of forgetting why the fuck you gave it up in the first place!!
Seriously though, if you're a caffeine junky, like I once was, try following nOthing's lead and give it up for a while.
Compared to going from 40-50 cigs per day to Zero cigs per day (cold turkey) it's a fucken walk in the park..its been 14 months since i had a ciggy. Been back on the caffeine for a while now (in moderation) without any signs of escalation or dependance....now where the FUCK is my rum & coke???!!!!