Love it or hate it, caffeine is hard to avoid. Coffee shops are all over the place, in city streets and malls. Machines offer coffee and cola at schools. Even though you can get caffeine-free coffee, tea and cola almost everywhere more than 80 % of adults in America consume caffeine regularly.
Caffeine raises the amount of sugar in your bloodstream, even if there is no sugar in your caffeinated drink. That’s what gives you extra energy.
Taking caffeine away from regular users causes withdrawal symptoms, like headaches and sleepiness. It also makes them react more slowly. So when you give these people the caffeine that they need they do better and react more quickly.
Many athletes take caffeine to boost their energy. Studies show however that caffeine only helps those athletes who are in good condition already. In an experiment runners had to run at a very fast pace. On average they were able to run for about 32 minutes. After taking caffeine they ran 7 to 10 minutes longer.
Although caffeine may be good for world class athletes, it may harm the health of people who are overweight. In some people it may even lead to diabetes.
In the end a cup of coffee or a can of cola once in a while is okay, but don’t overdo it !
sources from: http://www.english-online.at/health_medicine/caffeine/caffeine-stimulant-for-our-body.htm
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