She wakes up each morning at around 4:30 or 5, plays several rounds of online Scrabble on her iPad (against the computer) and drinks two cups of coffee.

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The National Highway Transportation Safety Administration says while sleep is the best cure, drinking two cups of coffee, followed by a 15-to-20-minute nap, can refresh some drivers for a short period of time.

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But one 24-hour Sudafed, two Advils and three cups of coffee later, I felt perky.

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People who drink two 8-ounce cups of coffee daily appear to have an 11% lower risk of developing heart failure, compared to noncoffee drinkers.

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Two well-heeled Japanese housewives murmur over their cups of coffee, while Mozart plays in the background.

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The average level of daily coffee consumption is slightly less than two cups, according to the study.

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