>>1669291Change in Body Fat = Calorie Intake – Calorie Output. Yes. This is true. This is, of course, analogous to the crowded bar. Change in Bar Crowd = People In – People Out. But so what? Who cares?
The first law of Thermodynamics is always true, but completely irrelevant to human health. Yes, if Calories In is more than Calories Out then you will gain fat. But if you eat more Calories, you will burn more calories. If you eat less calories, you will burn less. So there is no overall change in body fatness. Just like the bar – if more people come in, but more people leave, then there is no change.
The problem is that people now make the entirely unwarranted assumption that Calorie Output remains stable so that reducing calories intake (food) automatically results in loss of body fat.
