Pretty much anything--too much sleep, not enough sleep, thinking too much--can lead to overeating, as we here at The Wire discovered a few months ago. Well add another one more to that list: a study out of the American Psychological Association finds that impulsive people tend to have more junk in the trunk than more conscientious folks--by a lot. Study participants who scored in the top 10 percent on impulsivity weighed an average of 22 lbs more than those in the bottom 10 percent. Researchers also cite risk taking and antagonism as related traits.

It's not too surprising that these traits lead to overeating. An impulsive person wouldn't think twice about that second super-sized McChicken meal. And a risk-taker would think they could still eat Krispy Kremes and cheat cardiac arrest.

Also, this isn't the first time personality has been linked to overeating. Previous research out of Doshisha University in Kyoto, Japan has found that optimistic people have the most trouble losing weight, reports MSN. And the International Journal of Obesity found that neuroticism was related to weight gain. Pyschiatry News also linked novelty-seeking with obesity, and provided this nifty chart that links a whole slew of personality traits with failed weight-loss.

Pretty much any interesting human with any sort of personality could end up obese. But, hey, at least you've got personality!