I enjoy fasting from time to time. For health reasons, rarely for spiritual ones.
But when doing that for a longer time period I find that although it seems painful in the beginning, it gets easier. Eventually it almost feels pleasurable when you feel that hunger pain. Not because it physically is but because you get that virtuous sense of mastering your own body.
That being said I am kind of an ecto. I can eat what I want and as long as I run 3 days a week I will be skinny as hell. The hard part for me is actually eating enough.