The only way to protect yourself from EMF is standing inside a grounded cage or stay away from things that emit EMF.
All the "EMF protectors" out there are just New Age gizmos.

I always text on my phone. I use my laptop on it's battery until it runs low. I never use wireless internet. I moved from a basement apartment that had 3 neighbors 4bar wifi. When I lived there, I actually had chest cramping. We actually moved to a duplex so that I could control my environment. I have improved greatly.

If You like to think esotheric.
A physical effect when there are coils inside that there can be a small interference to the EMF field. But that is no prevention either a small change of recognition ( if so).

Better get this:
http://piano.freehostingcloud.com/art/EMV/Schutzanzug.pdf