A new study is titled Caffeine: The Silent Killer of Success. According to the study on the Linkedin web site, Most people start drinking caffeine because it makes them feel more alert and improves their mood. However, researchers found that large doses of caffeine accomplish that by raising blood pressure, stimulating the heart, and producing rapid shallow breathing which deprives the brain of the oxygen needed to keep your thinking calm and rational. They say it also reduces your ability to really rest.  (Read the article here.)

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