Hey Des,
I don't jogg myself so I can't comment on that so much, but I cycle a lot and can feel there is an absorb/project interplay. The difficulty is as you say to stay focused and aware when fatigue starts to set in, interestingly is it the mental fatigue at trying to be aware that causes the physical fatigue or the physical causing the mind to stray and thus losing concentration ?
I get from the recent workshop that the yin and yang are in a constant flow and that both are equally important, so in regards to jogging the planting of the forward step (from the mingmen to the big toe) is as important as the retrieval of the back foot (from the little toe to the perinium to the dantien). I guess that trying to be aware of both is in it'self an exercise to expand your concentration.
Also, just thinking on that, if there is a recycling of energy with awareness then maybe
it would take longer to get tired ?
Steve