The place to be for kids, as the metaphor goes is in a candy shop. For adults (or these days, teens) the place to be is the coffee shop. A study of U.S. residents shows that nearly 80 percent are regular coffee drinkers.
When searching for a brain boost, students choose coffee even over energy drinks [source: University World News]. Coffee beans, while pungent, can be good occasional snack for quick energy and attentiveness. Naturally, coffee beans are not recommended for children. Adults should also use them in moderation. Two or three may do the trick, depending on your caffeine tolerance level. Eat them slowly and monitor your responsiveness -- mindless eating of coffee beans can leave a student so full of energy he can't sit still to get his schoolwork done.