> Does this actually happen, I don't know, but I believe from personal experience and reading forums that there is a phenomenon of hitting a weight plateau that

> Does this actually happen, I don't know, but I believe from personal experience and reading forums that there is a phenomenon of hitting a weight plateau that is not explained by the simplistic calories in, calories out theory. It doesn't. People are bad at self-reporting their intake. Reading forums isn't a good source of information. Even if there was some kind of ultra-efficiency mode, it's worth noting that it doesn't mean calories in/calories out is wrong. It doesn't disprove the law of conservation of energy, I don't see why you think these two concept are opposed to one another. The reality is that there is no special starvation mode or metabolic damage that makes people ultra-efficient food processing machines. The research doesn't support it and a bunch of forum posts of people self-reporting their intake (badly) or outright falsifying information (but everything on the internet is true!) isn't backing up your case.