In a highly wireless transmission world, it seems virtually impossible to escape the ill effects of Radio Frequency Transmission. RF transmissions even at a low rate, if exposed for extended periods of time can have some very damaging effects to your health, even leading up to cancer and death. You can read more on the symptoms here. 
For the transmissions, we can’t control, there are many that we can.
Turn off all the fuses at night.
Shield your bed with a special metalized fabric to protect yourself from harmful frequencies that can disrupt cellular communication.
If you are constructing a new home or renovating one and the walls are being rebuilt you can install radiant barrier, which is a tough type of aluminum foil that will also very effectively screen out the EMF. This is what I did for my own bedroom.
Be aware that cell phones and wireless Internet features are not the only sources you need to be cautious of. Essentially, most all electronics will generate EMF’s, including the wiring in your home, electric alarm clocks, electric blankets, computers and lamps, just to mention a few.
At minimum, move your bed so that your head is at least 3-6 feet from all electrical outlets. If you are constructing the walls you can put the wires inside pipes, which will virtually eliminate the fields that are generated in the room when the current runs through the wire.
Turn off everything electrical in your sleeping area, including your alarm clock, WI-FI, cell and portable phones.
Try to minimize placing a non-corded phone to your head, and avoid using your cell phone when in a car with a child or pregnant woman. If you absolutely need to use your cell phone, crack your window so the radiation can dissipate quicker.
Sleep on a non-metal bed and mattress.
Put wireless devices on a timer so they turn off at night (and consider offering to buy your neighbors timers for theirs as well).
Use a geomagnetometer to measure magnetic fields in your home. If you detect high levels, make sure your bed is not near these areas.
Put solar blankets in your windows, or get low-E window film to shield your windows (most exposure will come in through your windows)
“Wireless Internet connections are one of the most concerning types of radiation because the exposure area is so vast. Have you ever noticed when you search for a wireless connection from your laptop how several other networks pop up on your screen?
This happens because all of those other wireless connections are intermingling with your own. So even if you don’t have a wireless connection at home, you will still be impacted by your neighbors’ connections.
Further, WI-FI is a kind of radio wave that operates at either 2.4 or 5 gigahertz -- slightly higher than your cell phone. Since they’re designed to allow for transmission of very large amounts of data, WIFI radio waves also emit greater amounts electromagnetic radiation.”