News about obesity is everywhere. And researchers are scrambling to find out why kids (and adults) become obese. Is it too many video games and not enough time spent outside? Household income? Education? Parents’ marital status? How many friends a child has? Depression and anxiety? The answers to all of those is: Could be. So here’s one more interesting twist: kids who sleep in their parents’ bed are less likely to be obese that those who don’t.