Espresso is a concentrated beverage that is brewed by forcing steam or water through finely ground coffee beans. A look at espresso's origins, consumption and machine evolution.
According to the National Coffee Association, 83% of adult American say they drink coffee. Your DNA affects how your body reacts to caffeine. You have to learn whether you are slow or fast caffeine metabolizer and whether you have a higher risk of non-fatal heart attack. Get tested with 23andMe.com to learn about your likely response.
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