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"And you thought Red Bull was bad. It turns out that while a can of the energy drink has 80 milligrams of caffeine, a small cup of Starbucks drip coffee has more than three times that amount. Since many beverages don't show their caffeine content, it can be tough to make sure you're not overdoing it - and the Mayo Clinic advises adults to limit their caffeine intake to 400 mg per day. More than that and you run the risk of unpleasant side effects ranging from migraine headaches to irritability, upset stomach, and even muscle tremors"

"Critical thinking is the heart and soul of learning, and-in our estimation anyway-ultimately more important than any one specific content area or subject matter. It's also an over-used and rather nebulous phrase - how do you teach someone to think? Of course, that's the purpose of education, but how do you effectively optimize that concept into lasting knowledge and the ability to apply it broadly?"