There is a lot to be said about the "Food Diagram", but here is a general synopsis.

DO 768 enters the body as food.  DO 384 enters the body as drink.  DO 192 enters the body as air.
DO 96 enters the body as warmth.  DO 48 enters the body as vision and audio.

do-768 transforms through the carbon 192 present in the body into nitrogen re-384.  Then, the 
nitrogen re-384 enters into the next process as oxygen mi-192 which is transformed by carbon 96,
and so on, fa-96, sol-48, la-24, si-12.  

At the point of mi-192, there is assistance required.  This is the "first mechanical shock",
provided by Great Nature so that everything that breathes can feed.

A shock from another octave must reach the food octave, which is the air octave.
do-192 transforms through the carbon 48 present in the body into nitrogen re-96.  Then, the
nitrogen re-96 enters into the next process as oxygen mi-48 which is transformed by carbon 12,
and so on, fa-24, sol-12, la-6.

At the point of mi-48, there is no assistance required, but requested.  This is the
"first conscious shock".  It is a possibility available to any normal human being.  This
interval is also known to be filled by "self-remembering".

A shock from another octave, the impressions octave, can develop the air octave.
do-48 enters, and usually nothing further happens.  In this case, the man or woman is a machine,
driven by external influences and foreign impulses.  With a certain development of the Mind,
do-48 can be processed further.  We must learn how to bring carbon 12 to our do-48.  Another
way of putting it is that we must "bring together" our breathing and our thinking.  This
will cause do-48 to be transformed into re-24, and then mi-12, at which point it stops for
lack of any further interaction.

fa-6 is the final result of the impressions octave.  la-6 is the final result of the air octave.
si-12 is the final result of the food octave.