Dieting exercise weight gain instead of weight loss may be related to unreasonable dieting, exercise caused by muscle gain, combined with disease. 1. Dieting unreasonable: some people in the pursuit of rapid weight loss during the weight loss period, through excessive dieting to lose weight, excessive dieting may lead to the body in a state of excessive hunger, but lead to a strong appetite, excessive calorie intake, weight rebound. 2. Muscle increase:Exercise makes the body fat consumption, but exercise can increase the content of muscle, muscle than fat density, resulting in exercise after the weight is not reduced but increased. 3. Comorbid diseases: such as Cushing’s syndrome, hypothyroidism and other diseases may lead to weight gain, there may be diet and exercise weight gain instead of weight loss. Weight loss is a persistent process, should be reasonable dieting with exercise. If physical discomfort occurs during exercise, it is recommended to seek medical attention in a timely manner.