Sorry, haven't RTFA, but what I know is that when people get heavier, the babies they get are biased to more weight. These kids, now adults, have a body that is

Sorry, haven't RTFA, but what I know is that when people get heavier, the babies they get are biased to more weight. These kids, now adults, have a body that is trained or prepared for more weight, and it won't give up that easily. I'm 5 kg overweight, and should lose another 10 kg to get the ideal weight. My goal is not to gain any weight, and I've kept it stable for about 10 years. I know when I overeat, and I feel really bad when I gain another kg. If that happens, it takes a week or so to lose it again.