It's sad but true. Our bodies want to return to our highest weight. We have to use our minds/intellect to prevent that. Yes, once we are maintaining and no longer losing weight, we can eat a little more and exercise a little less, but we have to stay the course of the diet we adopted to lose the weight in the first place. Also, we may not be able to eat as much as another person at the same weight, who has been that weight most of his/her life. Our metabolisms have geared down and I believe what this article does not mention is leptin resistance. Here is more about that from Dr. Briffa.