What are five characteristics of unsound weight loss program ?

The five characteristics of unsound weight loss programs are calories & nutrients, the timing of meals, portion sizes, behavior modification, and physical activity. Diet is restricting portions to lose weight or eating certain types of food.  While having diet the client should also have an eating plan foods divided into six groups, starches, fruits, milk, fat, vegetables, meat. Set serving sizes for each food. Serving sizes and the similar amount of calories.