Dear Mel, thanks for that 'stone in our garden' (guess you don't know that expression, it means as much as 'sending someone a small gift'...thus meaning, again, you will hopefully attract some Professional's attention. Yes, I have come across some WEIRD tales recently... Thomas Tritschler, a leading Manual Therapy teacher over here in Switzerland, explained us of some study (and that's the hook : I can't seem to find any further details in my notes I took... must have been around 2-3 pm in one of those Post-Lunch spans of unattention...) WHERE SOME SCIENTIST CONCLUDED THAT IN A LARGE POPULATION OF YOUNG MILITARY FLAT-FEET (NO ARCHES...MAINLY LONGIT. BUT ALSO TRANSVERSE ARCHES DIMINISHED...) HAD PROVEN TO BE THE MOST RESISTENT TO ENDURANCE WORK !!! So : am I lucky to have a set of flat-feet or should I do some straingthening of my lower limb - c.q. foot-arches reconditioning... - ... ? Thanks for keeping us awake ! Greetings from Switzerland, Erik Goossens Dipl. PT SRK - PT Educator Akad. TvdL Landquart Physiotherapie Erik Goossens GmbH MediFIT Medical Reconditioning CH-4102 Binningen - Switzerland