Many dieters deny themselves certain foods, only to find themselves thinking about these forbidden treats all the time. While they’re powering through and resisting the temptation with all their might, they may unknowingly be sabotaging their weight loss efforts because of this quirk of the human metabolism: digestion begins not in the stomach, but in the brain. This means that how we think about certain foods actually has an impact on how our bodies metabolize those foods, how much of the nutritional content we’re able to receive, and how much of the energy from that food gets stored as fat. If you’ve always been told that weight gain or weight loss is the result of a simple caloric equation, get ready for a whole new perspective!