If so, you're not alone. The typical American drinks 2 cups of coffee a day. A well-timed cup of coffee can clear a foggy mind or buy a few more hours of alertness.
Coffee contains caffeine, a mild, central nervous system stimulant.
If you've been feeling guilty about your favorite caffeinated beverage, don't despair. Caffeine-containing beverages can still be part of a healthy lifestyle. Caffeine is a naturally occurring substance found in the leaves, seeds, or fruits of over 63 plant species worldwide. The most commonly known sources of caffeine are coffee and cocoa beans, cola nuts, and tea leaves. Caffeine is a pharmocologically active substance, yet the effects of caffeine are temporary and usually pass with several hours.