Can I use them in a lightning storm?
There is no need to disconnect your Earthing product during a storm because a we stated before, all products come with a 50.000 ohm resistor, so If the nearby ground were to be struck with lightning and somehow traveled into the earthing lead, the fine wire inside the lead would burn out. The resistor is another barrier, as only a mosquito bite of power could pass through
Can I use them if I have a pacemaker?
According to several cardiologist including doctor Steven Sinatra it is totally safe to use a pacemaker as this practice is passive, just like walking barefoot on the beach
Do they heat when used?
This products do not conduct heat, therefore, they do not accumulate it and sleeping on them don't create any difference on heat perception
Is there any risk of electrocution?
All Earthing products connect only to the ground of your electrical system, therefore there is no chance of any electrical current entering your product, also, the resistor and fine wire would stop any hypothetical current getting into the system.