At contrair, meditation has been proved to help in every facet of life. A priest that meditates would potentially be a MUCH better priest.
I personally see praying as "talking to God" and mediation like "Listening to Him". I think there is plenty to learn from God in Meditation, silence, just listening.
Hum... I think you confused the motive of the question.
I asked if fasting was a viable way of spirituality because it is "unatural" for a human who can eat and is hungry, to not eat.
Yet, fasting is a commonly known way of spirituality almost in any religion you might be in. This is because when we "forget" the body with this kind of treatment we focus on the spiritual parts.
Now, we can literaly not live without food, but without sex we can indeed live, so it is not unreasonable to live without sex, and as seen wuith the example of fasting, we can indeed ignore a bodily need to give praise and attention to higher subjects, so votes of abstinence shouldn´t be seen as such an "unatural" thing to do for spirituality.