Getting married or even moving in together doubles your risk of obesity, new research shows. The longer you live together, the higher the obesity risk becomes.

Researchers at the University of North Carolina did find some health benefits to marriage such as decreased smoking and lower death rates. But those living together or married have greater weight gain then others of the same age.

Researchers believe people living together tend to have meals together, possibly preparing bigger amounts or eating out more often than when they were solo. Settling down also means more nights in front of the TV and less going to the gym.

So, if you're commitment-phobic, here's one more reason to stay single. And if you?re already living together, it?s time to get to the gym.

photo credit: JasonRogersFooDogGiraffeBee