Listen to this 'Talk of the Nation' topic

You know that gentle buzz coming from your computer under the desk? These days, it's possible that it's coming from a co-worker, taking a snooze. It turns out that more and more people are extolling the benefits of cat-naps, even at work. The most famous at work napper — George Costanza — was punished for it, but researcher Sara Mednick believes it can change your life. Do you ever doze off — on purpose — on the job?