Well, I would have deleted my "rabid," "aggressive," and "unsubstantive" comments, but apparently you've decided your users don't deserve the right to retract statements when they get off topic.
The fact that your body can change the number of calories it burn disproves nothing. For example, the more weight you lose the fewer calories you burn, thus your calorie intake must lower to sustain the same deficit.
The change in internal energy is negligible. The only exception is medical disorder.
If you want to lose weight and you are not, eat less. If the amount you eat goes below say 1200 calories and you're still not losing weight, go to a doctor.