Fulfillment can be realized when the ego desire is quenched from being, it isn't that hunger or any of the other biological urges cease, it's a contentment in being that transcends things. If not vigilant in the mind I find that the natural urges can be a lure back into the ego desire so though I will get hungry, the mind will use that to suggest what I "want" to eat or maybe that certain foods don't appeal to me in an attempt to exert identity from the natural act of seeking nourishment..