Some of the products available do use that way of earthing
Earthing Connection Universal Mat
.....but some sites don't recommend that way.
I need to find out more about Earth proton emissions - Schumann resonance seems to be involved too. My brain is bursting at the mo with all this strange physics stuff, (I must need the grounding
but barefoot in the grass is too extreme.)
I might end up buying one of those mats (above) - I can use it in bed and at the PC - if it does nothing else, at least I wont get any more static shocks from my PC tower (which started me off on this track in the first place
)