Most people will acknowledge that they shouldn't stand too close to a microwave, sit too close to a tv or be on their phone all the time; but few people know why. Electromagnetic frequencies are the waves that electronics give off that affect our body in some negative way. We have a magnetic field and are creatures that have an "electrical system". The waves from electronics are toxic to our body. The increase in these waves has been exponential in the past 10 years but no one is talking about that.
Emf protectors (as sold on the product page) both help charge our electromagnetic field and block toxic emfs from our world.
Another way to charge our magnetic field and block emfs is through grounding or earthing. This is basically connecting to the earth/nature in the same way electricians ground electrical wiring. You can find more information about the healing power of earthing :