- Stimulant. Whilst it's well-known that a 'cuppa joe' can act as a mini pep rally for your brain cells, it was documented recently  that Google itself is also a gymnasium for your mind. Older subjects of the study who searched and had prior Internet experience actually stimulated their visual cortex, the same area of the brain that's active when reading a book. Bottom line, Google is a challenge to your thought processes, excercising your decision-making and complex reasoning 'muscles'.
- Focus. Caffeine affects the brain and results in increased attentiveness, so theoretically a person can think more clearly, work harder and sound more intelligent. I'm not certain there's a definitive test to demonstrate Google's effectiveness in achieving and maintaining mental focus, I *DO* know however, that Google gives me the ammunition when discussing topics I would normally know nothing about. In fact... Google gives others the impression that I actually know a lot about everything! Clearly, Google is using Caffeine's focus attribute to infer every Google-user will be the focus of every party just by pontificating things like the age old question of "What's the airpseed of an unladen swallow ?"
- Anti-Soporific. When taken before bedtime, caffeine can interfere with getting to sleep or staying asleep. I don't think anyone doubts the effects of Caffeine to keep you up most of the night. A hot tea, a mug of coffee, or one of those NoDoz pills people often malign  can interupt a good night's rest. For those insomniacs, what is the first thing they end to do on opening their eyes from a restless sleep? Fire up the laptop, of course! Coincidence? I think not! Whereby caffeine (the drug) stops you sleeping soundly, Caffeine (with a capital C) keeps you awake searching for an insomnia cure!
Nothing happens by accident! Certainly not in the world of hip branding and smart, cool software engineers. So when Google announced its next generation of Google search, code named "Caffeine" I, for one, was inspired to learn the reasoning behind the what and why of their code name choice. A bit of research of "caffeine" on "Caffeine" later, and I found a few interesting facts about caffeine the drug and its justification as Google's lightning fast search engine update nick naming. The effects of the caffeine on your mind & body