People who drank three to five cups of coffee per day had a lower risk of premature death than those who didn't drink, a new study finds. iStockphoto hide caption

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Drink To Your Health: Study Links Daily Coffee Habit To Longevity
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Gulping down coffee to stay awake at night delays the body's natural surge of the sleep hormone melatonin. Hayato D./Flickr hide caption

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Caffeine At Night Resets Your Inner Clock
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Make mine a venti: An example of a drinking vessel from the Grasshopper Pueblo archaeological site in central Arizona. Researchers tested shards of similar vessels found at various sites in the American Southwest and found evidence that people in the region were drinking caffeinated cacao and yaupon holly drinks 1,000 years back. Courtesy Patricia Crown hide caption

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One teaspoon of pure caffeine powder delivers about the same jolt as 25 cups of coffee. The Center for Science in the Public Interest hide caption

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Potent Powdered Caffeine Raises Safety Worries
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A barista makes coffee using the pour-over method at Artifact Coffee in Baltimore. Benjamin Morris/NPR hide caption

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Coffee Myth-Busting: Cup Of Joe May Help Hydration And Memory
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If Caffeine Can Boost The Memory Of Bees, Can It Help Us, Too?
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The bar at a surprise birthday party for Teen Wolf's Stephen Lunsford, presented by Monster Energy last November in Los Angeles. Todd Williamson/Invision/AP hide caption

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