Huh?  Received this from another list.  Never heard this before.

Theola


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"It is known that Protein is 5 calories per gram, but that the body needs
to invest 1 cal/gm in order to use 1gm of protein for energy, thus
protein is commonly thought of 4 cal/gm. This stems from the "diet
paradigm" in which one wants to loose weight, thus "active calories" are
what counts."