I read in a magazine a while ago this interesting study about being sick and exercise. In the study, people who had colds and healthy people both did the same exercises. The sick people reported feeling more tired and not having energy, but they performed just as well as the healthy people when doing the exercise... like they had the same stamina on the treadmill, etc. So I think that is encouraging. You can still exercise, as long as you feel able and you want to. It might help you feel better, you never know.
Other than that, just try to keep your hands busy while you are relaxing.. a crossword puzzle maybe, or knitting, anything like that which takes attention and occupies your hands, it will probably help you stay away from the fridge. Hope you feel better soon!