Caffeine information

I read this on braingle.com and thought you guys might be interested.Caffeine is probably the most commonly used chemical stimulant. More than 90% of Americans consume caffeine on a daily basis in their coffee, soda, tea, or chocolate. Pure caffeine is a white bitter-tasting powder that can be extracted from coffee, tea, the guarana berry, or from other sources.Caffeine is a brain stimulant. It