It gives you a perfectly legal energy burst, mental lift, and metabolism boost. Doctors allow and even encourage it. Caffeine officially rocks. Just make sure its effects always take you to your happy place, and not over to the jittery, irritable dark side. By Jessica Girdwain
First, why caffeine is good for you
Forget the guilty rap; science is proving that caffeine has very real health benefits. In its natural form (meaning coffee and tea, not soda), caffeine is a stimulant that activates the areas of the brain responsible for alertness, cognitive-thinking skills, and even pleasure. Researchers believe it's the caffeine itself, along with the ample antioxidants in naturally caffeinated drinks, that makes them so good for us. A few of the perks:
1. A longer life: Women who drank anywhere from two to six cups of coffee a day had a 15 percent lower risk of dying during a 14-year study by the National Institutes of Health. What's more, caffeinated java can help slash your
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