Ah, this is called an ectopic heart-beat (usually harmless). Back when I drank too much coffee and didn't sleep in my last year of college, I got a few of thes

Ah, this is called an ectopic heart-beat (usually harmless). Back when I drank too much coffee and didn't sleep in my last year of college, I got a few of these. Now I'm a one-cup-a-day kind of guy, and it hasn't happened much anymore.