Life is better with caffeine. By which I mean, caffeine in very specific liquid form, as a byproduct of drinking certain hot beverages, can minorly improve some people's mental-alertness. You can't just carry around a packet of powdered caffeine in your pocket like a good luck charm. Come to think of it, don't put hot liquid beverages in your pocket either. Learn from my bad decisions. Anyway, this Barista Plague doctor is great and you should get it.