How does the rich sleep at night?

Very well, apparently.

As you can see from this graph, poor people spend more time in bed, but rich people take less time to fall asleep. As a result, the haves catch more winks per night on average compared to the have-nots.

The main question is, did those researchers count time spent watching TV in bed as "time in bed"? If they did, then the whole study is rather useless and predictable. If they didn't, then the findings are genuinely interesting.

(One way or another, I wonder how long before David Brooks cites this paper as an explanation of why the income gap is growing -- Whip Apnea Now!)