Is it possible that some people really have to drop cals below 2000, or 1800? I've been dieting (from what trainers and nutritionists are telling me) perfect. Is it possible that some people's body adapts to the dieting scheme and holds on to fat, even at such a low calorie count. I'm just curious, bc I have absolutely no prob packing on muscle, but cutting fat is damn near impossible. Thanks in advance