The most widespread mistake – to consider a formula of power balance in an organism as static "you eat less – will lose weight". Any who at least once tried to lose weight faced that since a certain moment it ceases to decrease, and additional reductions in calories do not lead to desired result. One of the possible reasons – the overestimated expectations when the person aspires to the weight, unreal for the constitution.
Our weight, as well as other vital functions, is controlled by a brain which receives signals from the outside and from within (from intestines, a liver, fatty tissues and muscles). Thus it regulates expenditure of calories, starting various processes for optimization of functions of an organism. For this reason the formula of power balance very dynamic, and reduction of a diet does not lead directly to dumping of weight.