Its strange, I absolutely love my food but on a DD I can struggle until about 2pm then I completely go past it, I can be making OH something delish for his tea and not eating won't bother me? I think for me though its because I know its only that day I cant eat, I can have it tomorrow.
Don't struggle to eat and make yourself feel ill on DD s though, as long as you are eating plenty on your UP days there is no lower limit for Downs. The theory works best if you actually fast every other day, however as that is unmanageable for the majority of people there is a low figure set. So` you don't have to force it down if you really can't face it BUT you must eat your UP day calories, not eating enough on you DD will not sabotage your weight loss but not eating enough on your UPs will xx