>it's unlikely to do anything other than make you more alert and awake.<p>I find that extremely hard to believe.<p>If I drink 5 cups of coffee per day I get heart palpitations, an upset stomach, and am extremely irritable in general. The same goes for my significant other.<p>I actually went to a heart specialist and wore a heart monitor for 48 hours last year because I was having an irregular heartbeat and would black-out occasionally after jumping up out of a chair. The diagnosis? I'm fine. I just need to ingest less caffeine.<p>I think I'll stick with my one cup per day, below average amount.<p>It's just enough to wake up me, keep me alert, without any of the negative effects that caffeine brings with it.