> The HOGO rest system is connected to the building grounding system for the removal of residual and accumulated EMFs in the person during the day. The plug, with a no-return diode, is made of plastic and rubber so as not to be a conductor of the electricity.

This is pure 100% nonsense. Whatever that bed is, it is not shielding EMF in any way, and it cannot possibly work. It's like every word there is wrong: EMF do not accumulate, you cannot remove them with any kind of bed, "no-return diodes" do not exists, plugs made out of rubber have no effect.

I was looking forward to see the sleep study in Faraday cage (that would be interesting!) but I got this pseudo-science junk instead.

This is pseudoscience, and bullshit. It's not even worth debating any of these studies until there's some clear causal mechanism demonstrated, not just the outcome. It's like entertaining the idea of vaccines causing autism or whatever other nutty studies