I will do my best to tell you the whole story.
It began when I got a very serious headache from gas. It took me 11 months to find out exactly what it was.
It was the vanadium in the gas which caused the problem. According to the National Grid there is no vanadium in gas. Except that they clean the methane with vanadium brushes or something like that.
I got no joy at all from the local doctors. But the consultant said that I knew a great deal more than he did, The reason being is that I spent a long time looking it up. You will find little or no information on vanadium in the net. The interesting thing is the pain in my head was always exactly in the in the same place.
Much later I bought a speaker ,cheap one, Bluetooth and within a very short time I had a bad headache, surprisingly the same place . So I place a bit further away, and no headache . I guessed it was the lithium battery for there is not much more than that in the speaker and hence the same with the iPad .
Fortunately I know someone who can cure most things and cured my wife with severe contact dermatitis which conventional medicine couldn't do . I also had a problem for 25 years which she managed to solve in 20 minutes. Even though I am very sceptical on alternative medicine with everything we had wrong with this she simply fix it. I was highly impressed. It is called bio resonance .
The problem I find is that conventional medicine is not yet at the stage where it recognises these problems . You may not be aware yet but 'smart meters' are a particular danger . Sorry for going on so long but that is the whole story .
When your body is asleep your resistance is lower and hence more susceptible to radio frequencies etc.