When I saw the transformer picture and @gentleshaid I rushed to take a look. Maybe my elder brother who is a biologist has turned to an engineer, electrical engineer for that matter, lol. On the subject, just as electricity can be sinked to the ground for safety, it could still be sourced from ground.
I did this a lot when I was in school, nepa used to cut our light leaving only the life terminal on the pole. All I did was to connect one metal to the ground and connect a cable to it and with the life terminal, I have a complete electrical circuit.
On the earthing the body, could it be the reason we notice less body pains after sleeping on bare ground after coming back from hectic farm work?
RE: Let's discuss electrical earthing in relation to the human body