Is a method of enhancing the efficiency of food use and lowering the metabolic rate of the body through successive cycles of dieting and weight gain.

yo- yo diet

Explanation:

Yo-yo diet is a method of cyclic loss of weight gain and loss which is called as yo-yo due to the up and down motion of a yo-yo.

In this type of diet the person who is dieting first looses the weight but then again gains it and then again goes on a diet to loose the gained weight.

In this type of dieting pattern a person initially starves and maintains a hypocaloric diet to enhance the efficiency of food use however, this starvation back fires as when the person starts eating again the tendency to eat more fatty food and high caloric intake increases.