Seems we’re a lot like Pavlov’s dogs: instead of salivating when we hear the bell because we’ve been trained to know food’s coming, we get a boost of energy just by looking at coffee.

We’ve been well trained to know psychologically that along with drinking coffee, we know we’ll get a boost of energy, too. So when we simply see our cup of coffee, this study published on’s website says it triggers our brains, and we get a boost!

Is that enough for you, are you convinced? It could save you money–you could just walk into Starbucks, take a look around, and walk out energized!