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One of modern life ironies...caffeine.
"The principal reason that caffeine is used around the world is to promote wakefulness," Czeisler says. "But the principal reason that people need that crutch is inadequate sleep. Think about that: We use caffeine to make up for a sleep deficit that is largely the result of using caffeine." -excerpt from this month's National Geographic magazine.

And I wanna this guy's job.