It was remarked this morning that some people said they could not fast because it made their head ache. Well, I can fast, and so can any other man; and if it makes my head ache by keeping the commandments of God, let it ache. There may be some people whose health is so delicate and fragile that they would be harmed by fasting for twenty-four hours. Such people are very, very rare; for the vast majority of us, our overall health could only improve by avoiding food for a day. I believe if the Saints, and indeed anyone else, fasted once a month, they would see real health benefits.
(Available here and here; search for "head ache".)
Here's a great blog entry someone made on the subject:
A Fast Sunday « My Life in Zion
From my perspective, the Saints (myself included) do not understand or take nearly the advantage of this ordinance that they should. I am currently testing out a fasting regimen, which I might report on later. Anyone have any insights into fasting?