people can avoid the yo-yo effect by changing their diet. if a diet works without the body switching to a more efficient way of using calories, there will be no yo-yo effect. a diet should change the dieter's eating habits for a long time. new eating habits should not give the body more energy than it needs. at the end of the diet, it also makes sense to raise the number of calories someone eats slowly. exercise and sports can increase the amount of calories burned by the body rather than turned into fat.