I just read that many overweight folks (myself included in that group) are chronic Undereaters! I interpret that to mean that rather than always fulfill their hunger needs with enough healthy food and protein, they restrain themselves frequently from eating (the undereating part) then their bodies clamor for food later and the metabolism gets all whacked. I think the point is to make sure to eat 3 meals a day plus 2 snacks. (talking to myself here).