To me, fasting is about denying yourself something that you desire, in order to more fully focus you mind on God. When I fast every time I get a hunger pain, I pray..it is not fun to fast...I love to eat!! But I can deny myself for one day.
I can see that. One meal wouldn't be significant for me though. Sometimes I go to the afternoon before eating. Now skipping eating from 5 to bedtime would hurt:')