A new study conducted by the University of North Carolina has found that couples who marry or move in together double their risk of obesity. The UNC report also found that the longer a couple lives together, the higher the obesity risk becomes.

Scientists at the University of North Carolina found numerous health benefits to marriage such as decreased smoking and lower death rates. But couples who are living together or married tend to gain more weight than 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 married or thinking about getting married, make an extra effort to cook at home and prepare healthy meals whenever possible. And don’t completely forget about the gym.