Here's something brand new to worry about.

Researchers at Cambridge University in England did a 13-year study of more than 16,000 people and they found people who regularly take naps are much more likely to die young.

People who take naps are almost 33% more likely to die before age 65 than people who don't. Why? Well according to the study, people who take naps are twice as likely to die from a respiratory illness.

Now the real questions here are: do people who nap a lot develop breathing problems? Or do undiagnosed breathing problems make people tired and want to take naps?  The researchers aren't sure.

Their big recommendation is if you find yourself taking a ton of naps, it's worth going to a doctor to get yourself checked out because you could have an undiagnosed breathing problem.

[American Journal of Epidemiology / Gawker]