There is no clearly-defined safe distance as this new issue has yet been studied enough. While EMF emissions from different routers vary, for most home WiFi routers, a distance of 40 feet (ideally, or 10 feet at a minimum) will help your body and shouldn’t impact your WiFi connection too much. And beware that radiation from WiFi routers can pass through the walls in your home so keep this in mind as you evaluate the safety of your bed's location. Those who are sensitive to EMFs should take extra efforts to reduce EMFs and chronic proximity to the sources.
W. Kim Johnson, a retired physicist and past president of the New Mexico Academy of Science, reviewed the Aires web site for Discovery News and described the material as gibberish, saying that the authors "of the technical description of the ‘Aires' device reads like a random selection of technical terminology. The working description for this device is made up of jargon that, in the end, really says nothing."

when i bring my hand very close to a tuned-in radio transistor, the volume drops to almost zero and i can no longer hear the music or news unless i take my hand away from the transistor radio set. if that is the effect of em radiations from a human body on the audible signal of an electronic device reducing its audio signal to almost zero then the long-term effect of powerful em radiation of 1- 2GH frequency from a wi-fi router or a celphone must be dramatically traumatic for the human health. this has to be so because human body almost entirely functions on signals generated by ions and molecules in the body cells which are likely to be severely disrupted in the presence of such strong em radiation fields emitted by man-made external sources such as wi-fi routers and mobile phones.

That may be true today. But some experts have grave concerns about the types of low-intensity radiation our wireless devices produce. “We have animal studies suggesting even low-level exposures to the kind of radio wave radiation associated with Wi-Fi could have a variety of negative health effects,” says Joel Moskowitz, director of the Center for Family and Community Health at the University of California, Berkeley. (Moskowitz has collected much of that research here.)
In the Lancet article outlining their considerations, that IARC states that epidemiological studies that follow humans who use WiFi and cell phones for a few years are not conclusive. However, rodent studies that follow the animals throughout their lifetime find that wireless radiation does cause cancer or worsen cancer prognosis. The same animal studies also observed other changes in the brain and blood brain barrier in animals that are exposed to the radiation.
This is extremely important for a lot of reasons but will be crucial for any step to reducing radiation. Having a quality EMF meter will allow you to determine what kind of radiation devices in your home are emitted, as well as how much. This will also be crucial in understanding how different changes are improving this I would highly recommend either the TriField TF2 (read my review), or Meterk (read my review) if you need a lower cost EMF meter.
Standard Wifi works on the 2,45Ghz frequency, you talk about microwaves from the frequency of 1Ghz or higher, below that they are called radiowaves (radiofrequency), so your statement is false. Your microwave works on 2,45Ghz as well, hence MICROWAVEs. Your Wifi-router, when not connected to a device still sends out pulses “Beacon Interval” which is on the default settings 10 pulses per second. An Eco-Router has the setting changed to 1 pulse per second, reducing exposure when it is idle. Many Wifi-routers with a 10/s Beacon Interval can give induced “Panic Attacks” to people who are sensitized to the High Frequency EMF.
36. Teach your kids to ignore anonymous calls or texts. It’s one thing for adults to choose to answer anonymous calls or text messages, but kids may not always know how to detect a scammer and may unknowingly reveal personal information that could be used in malicious ways. “An anonymous call could be someone trying to extract personal information. An anonymous text could be phishing.” – Rob Zidar, 13 Cell Phone Safety Tips for Teens, Pre-Teens and Their Parents, Lawrenceville Patch; Twitter: @LawvilleNJPatch
Nevertheless, a group of scientists got together in the mid-2000s, calling themselves the BioInitiative Working Group. This group, which largely consisted of wireless radiation researchers, has written a harsh reply as feedback to the reports claiming that posed no health risks.  The reply lists a wide range of health effects scientists at the European Commission have unfortunately either ignored or dismissed.