John,
     How about the extra weight helps with muscle tone. This increases=20
overall health. Nothing special.
Thanks,
rich!

On 7/25/2014 10:45 PM, John Gardner wrote:
> There may be a health benefit to carrying a rock around.
>
> Whether the benefit is due to magnetic fields is yet to be
>
> demonstrated, AFAIK....   :)

--=20
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