I think you're missing the point. "weight" = calories in - calories out This doesn't tell the entire story. Of course thermodynamics are in play, but most people believe the "calories out" is fixed (by your height/weight) plus whatever calories you burn working out. That is not the case. I hesitate to annoy such a petulant user as yourself, but you seem to be more concerned with jews than with reality. The reality is that the human body reduces its metabolic rate as a result of sustained caloric deficit. Ever notice that "The Biggest Loser" never has reunion episodes? They're all fat again. It just doesn't work long term. You'll be cold and hungry for months, and eventually level out. Intermittent fasting + HFLC diets are the way to go. Of course, you can overeat with these methods, but allowing your body to process stored fat is ideal.