Consume fewer calories than you burn! The common theory for losing weight sounds so simple and logical that millions of people not only read the energy information on the pizza pack, but also have an activity tracker on their wrist or a calorie scanner on their cell phone. However, these strategies are often not successful. The reason: the calorie is out. Studies show that when it comes to losing weight, there are a few other things that matter. And sometimes the obese aren’t even to blame.