The study reports there are many people who overeat during times of stress — often seeking comforting foods high in fat and calories — but that these people tend to not reward themselves with food after a positive experience. Conversely, some people become so stressed that they lose their appetite, however, they're more likely to go all out after a positive experience and indulge in some heavier eating.
It's just another example of how food is tied up with emotion in unexpected and complicated ways. So often eating is relied on as a means of dealing with life. It seems that whether we're using food to comfort ourselves through hard times or as a reward for a job well done, we're using it somehow.
(The Huffington Post)