Because of the radiation and such
Totally harmless.
Totally safe.
The best way to travel is to live somewhere in northern Canada.
You have radiations everywhere. No matter if you have your cell phone with you or not…
And such radiations are not harmful to the body.
So you can watch a movie with the headphones…
If you do not want Nasa to suck your thoughts out of your head and release your darkest fantasies in Darknet, you should leave it.