----- Original Message ----- 
From: "Robert Kesterson"
Paleogal wrote:
>
> I'm at a loss to understand the running.  Why pound your bones into the
> ground?  I'm not so sure this is a good thing.

Possibly.  But it doesn't seem to bother these people:

http://www.menshealth.com/cda/article.do?site=MensHealth&channel=fitness&category=motivation&conitem=3b4b1ca01e91c010VgnVCM10000013281eac____&cm_mmc=DailyDoseNL-_-2008_04_25-_-MainBlk-_-The_Men_Who_Live_Forever

They don't appear to be running on sidewalks or treadmills.  The ground is 
cushioned.....  ex.,"Fourteen Tarahumara are running with us, and to be sure 
they're challenged, Caballo has mapped a brutal course. He has us fording 
rivers, climbing 2,000-foot hills, and scrambling up scree-covered trails" 
The scree is an uphill thing, not running on cement.   Sounds paleo to 
me....     Oliva