Caffeine is a bitter ingredient of coffee, chocolate, tea, many carbonated and soft drinks and many medicines. It affects the body through metabolism by stimulating the nervous system. It makes an individual more alert and gives him a boost of energy needed in many situations. In moderate amounts, caffeine has been shown to have positive effects on people’s bodies and minds. There is some evidence that caffeine may help improve memory, enhance workouts and boost concentration.
Caffeine (1, 3, 7 trimethyl xanthine) content can vary from 160 milligrams in some drinks to 4 milligrams in 1 ounce of chocolate syrup. Even decaffeinated coffee isn’t 100% free of caffeine. In diet pills, medications or pain relievers there could be 16-200 milligrams of caffeine. It is, however, mostly consumed through coffee.
