If you go most of the day without eating then fill up at night, you might have a condition known as night eating syndrome.
Victims tend to eat alone, without enjoyment.
They're anxious and have trouble sleeping afterwards. Many are overweight. Johns Hopkins eating disorders expert Dr. James Wirth says night eating may be a disorder of the body's natural timing mechanism. We have a circadian rhythm, we have internal clocks and here these people do something on a very regular basis, very much like bulimics, who will tell you that they have a tremendous urge to binge and vomit, particularly to binge, in the late afternoon or early evening. There is another kind of argument that is used to explain bulimic patients eating later in the day or at night and that is they have had a hard day, they've had a stressful day they're trying to relax, they're trying to do something to divert their mind from the tension and anxiety, so they eat.