Are you getting enough shut-eye? More and more people don't think they are.

And depending on what you do for a living, that could mean anything from lower productivity to putting lives in danger.

Taking a relaxing snooze in the midday sun on your lunch hour is a good way to catch up on some Z's. That stands in stark contrast to the alarming places some people are being found asleep these days.

Places like air traffic control towers, TSA checkpoints, and even allegedly at the wheel of a tour bus, an accident that resulted in 15 deaths.

I think it's been going on for a long time and we're recognizing it more and having to deal with it more because we have more people in 'mission critical' type of jobs, said Dr. Lawrence Epstein, chief medical officer for Sleep Health Centers.

But it isn't just controllers, conductors or big-rig truckers running on empty.

A recent study showed 35 percent of those surveyed reported sleeping less than the recommended eight hours per night.

Sleep disorder doctors are studying the effects of the lack of proper shut-eye and have found an increased risk of obesity, diabetes, heart problems, sickness and depression.

There are several studies which show in drivers, for example, that if you miss a night's sleep, you're at great risk, said Matthew R. Ebben of the Center for Sleep Medicine. You're at risk similar to someone who's driving drunk.

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