On Tue, 8 May 2001, Charles Alban wrote:

> So how does this explain the fact that fasting leads to higher energy levels
> ("exhilaration" - Atkins) ?

I have experimented with fasting a bit, and experienced some of
the heightened energy level effect.  But it depends on a number
of factors, especially not having to engage in any high-intensity
exercise.  After 24-36 hours of fasting, liver glycogen is
depleted.  If high-intensity exertion is required, muscle
glycogen is quickly used up, with no way to replenish it.  The
feeling at that point is anything but exhilarating.  And of
course, after the liver glycogen is gone, muscle must be
cannibalized to produce the necessary glucose.  This could be
avoided if one consumed just enough glucose to cover the debt,
and nothing else -- which may be why some people do better with a
modified fast including some fruit.

Todd Moody
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