Yeah, aren't grains the normal diet for rats? So wouldn't their
calibration for health be tuned to a grain diet? Correct me if I'm
stupid here!

Hilary McClure
Danville, VT

Gawen Harrison wrote:
>
> Humans aren't rats.
>
> >  Barely measurable amounts of energy, released as body heat,
> > could be the difference between holding the waistline or adding 10 pounds a
> > year, say Cornell University researchers who turned couch-potato rats into
> > exercising athletes.
> >