A sensible diet and moderate exercise for weight loss is good for the body. However, if you lose weight by dieting alone, you will suffer from insufficient nutritional intake, resulting in insufficient energy supply to the body, which in turn will lead to physical weakness; blindly exercising at high intensity to lose weight, which is beyond the body’s capacity, will also cause physical weakness. Therefore, weight loss should be based on a reasonably controlled diet and a gradual increase in exercise.