Caffeine occurs naturally in many plants,

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including coffee beans, tea leaves, and cocoa nuts. Caffeine is really a biological poison used by plants as a defense against being harmed and injured by the other forms of life in their environment. The caffeine gives seeds and leaves a bitter taste, which discourages their consumption by insects and animals. If predators continue to eat a caffeine-containing plant, the caffeine can cause central nervous system disruptions and even lethal side effects. Most of them learn to leave the plant alone. Action Fuel ProThough it is widely known that caffeine is an addictive and unhealthy drug, it is widely consumed and as much a part of American contemporary life as smoking was years ago. With the spread of and popularity of coffee bars, coffee, one of the main sources of caffeine in people's diet, is more popular than ever. (Tea and hot chocolate, also consumed at these coffee bars contain significant caffeine, but not as much.) Around one third of all coffee drinkers say they can't do without it and are clearly addicted. Tolerance for caffeine for anyone drinking coffee can develop rapidly and lead to the desire to increase ones consumption. Someone used to drinking six or seven cups of strong coffee a day will begin to experience withdrawal symptoms on waking and then every two to three hours after the last coffee drink. If you are seeking optimum health, however, you should severely curtail your coffee consumption, and eventually stop consuming it at all. It is a drug and the last thing any of us needs is another addiction.

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