If a person does not rebound after losing weight successfully, it means that he has developed some living habits that thin people should have. Most people bounce back after losing weight, because after losing weight, they return to their previous schedules and eating habits. Of course, over time, the meat will grow back.
So I really envy those who don't rebound after losing weight successfully. These people are extremely stressed, and they can sacrifice something for appearance, or insist on something. If you lose weight successfully, it means that this person has new living habits, work habits and exercise habits.