Re: Does it take less time for already-lean people to reach stage five of a fast?

Koldo,
an excess of fat reserves are not the only food reserves that should be available during a prolonged fast.
There are minerals and Vitamins and phytonutrients that are also essential as well.

Muscle tissue is well-preserved during even the most prolonged fast: even in starvation.
Yeo's physiology gives these estimated losses that occur in death from starvation as:--
Fat 97% Spleen 63%
Muscle 30% Blood 17%
Liver 56% Nerve Centers 000

The body enters a “protein–sparing” state when water-only fasting. In this state the body conserves its muscle reserves and fat is broken down as a bodily preference.

Normally, if we don't eat for a day or two, we start to use muscle tissue to make the glucose needed by the body, since glucose can be manufactured from amino acids stored in our
muscles. If we continue to fast, however, the body senses what is happening and attempts to conserve its lean muscle mass by a few different mechanisms. Fats are broken down to fatty acids that can then be utilized by the muscles, heart and liver for energy.

By about the third day of a total fast, the liver starts generating a large quantity of ketones from the body's fat stores. As the level of ketones rises in the bloodstream, the brain and other organs begin to use these ketones as their major fuel, which greatly reduces the need/use of glucose by the body.
This significantly limits muscle wasting.
These keto-acids are used for fuel mainly by the brain, muscle tissue, and the heart.
This production of ketones, called ketosis, develops within 48 hours in females and 72 hours in males, and muscle wasting at this time decreases to very low levels.
This is known as protein sparing.

Thus, the human body responds to the fasting state by attempting to conserve its muscle and lean body tissue to the maximum.
However, with severely restrictive diets, like juice fasts, the body does lose weight, but the brain and other organs do not subsist mainly on ketones. Therefore, in proportion to the actual weight lost, juice-fasts (feasts) and severely restrictive diets cause us to lose more lean body tissue and less fatty tissue than do total fasts on water-only.

There is no optimum starting weight for beginning a fast.

Q. "Is more than one fast necessary to reach completion or the return of natural and genuine hunger"?

A. Absolutely not. Any first fast, if carried thru for long enough, will eventually reach the point where its food reserves are becoming exhausted, and this is where natural hunger will make an appearance.

It is also well known that the return of natural hunger will make itself known if the max' healing and cleansing of the body has been reached. This could even be in a matter of days and not weeks or months and well before the food reserves have become depleted.

The most success with fasting comes from those who achieve the maximum rest of the body (physical) and mind (freedom from stress and anxiety). This conserves food reserves.

Fasting is essentially a state of "physiological rest" and so if we maximize and channel our available energies into cleansing and healing, the best results are obtained.

Chrisb1.


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