blinky
Look at it this way. If your stomache grumbles you will think hey, why is it grumbling, then you will think oh because im not eating, then you will think why am I not eating, and then you will think oh because today is yom kippur and Hashem said that we should have 5 Inuyim and one of them is not to eat. I think that thought process will in itself bring you closer to Hashem.