Has anyone heard of grounding shoes?

Don't understand all that I have heard about Grounding Therapy. I tend to agree with @mikaylar. Seems like to me if there was much to it I would have no foot problems at all. I live in a house with a bare concrete floor poured on packed soil and go barefoot most of the day. Outdoors too as long as I don't have to walk on the road. BUT: My problems don't seem to be as severe as some others have reported. Who knows for sure?

I have PN with pain mostly in my calves. My grounding shoes are Hike's and wonderful. I can wear them all day where regular sneakers hurt my feet after a couple of hours. I have wide feet and Hike's have a very wide toe box that allows my toes to spread out helping my balance. The soles are quite thin so not good for walking in fields or wilderness where more protection is needed.