A viral post suggests: 'Put an aluminium foil behind your Wi-Fi router and thank me later!!!' On X, commenters have been amazed by the trick. One excited commenter wrote: 'Amazing what simple ...

If you have metal fillings and you've accidently put tin foil in your mouth then you'll know it isn't a great feeling. The reason it hurts is because you get a galvanic shock which is when your ...