Eating only apples on the first day and drinking only milk on the second day is actually the evolution of a single diet.

Although the weight will drop rapidly in the short term, this method will rebound as long as the normal diet is restored.

The principle of losing weight by eating only one food a day is to dehydrate the body by reducing the intake of salt, so as to achieve the purpose of losing weight.

It will cause nutritional imbalance, and the consequence will be weakness. Because he only eats apples on the first day, protein's insufficient intake will lead to anorexia and depression. By the way, the death rate of anorexia is second only to cancer. And once such a diet returns to a normal diet, it will immediately gain weight.

This single diet will damage health due to lack of nutrition and even lead to the crisis of immune imbalance.