Earthing is very good and normally with 40 minutes you can see under a dark field microscope that blood cell bottle capping and other oxidative symptoms of the cells like clumping etc are lifted and many people restore much better when fighting an illness. Most of us are so far removed from the earth, walking whole days on plastic or rubber soles and getting exposed to many unnatural man made things so it is great to sit on the grass and discharge those positive electrons as the earth is negatively charged. Blood flow improves etc etc. .. We normally shield the bedrooms from our clients when there is a source of wireless radiation (HF) coming in from outside (you can turn off your own wifi but not the neighbours or the phone towers) and then use circuit cut off switches for the LF in the bedroom. You don't want have any electricity in your bedroom when you sleep and in 90% of homes the wiring in the wall with it's electric and electromagnetic fields are causing impaired Meltonin production.