Computer marathons may be dangerous
The effect of electromagnetic field on our health has not been fully investigated by scientist yet. It is not possible to say, if it is really harmful to our health, and to what extent.
After all, a lot depends on the wave frequency, its power, time of exposure and distance from its source. Scientists and doctors are inclined to believe that the harmful biological effect of electromagnetic fields on human body is negligible, with the exception of some frequencies. Being aware of the potential risks, even if only minor, we should take a precautionary approach to minimize these risks. Therefore, it is worth remembering that activities such as working at the computer, preparing lunch in a microwave oven or talking on the mobile phone are not dangerous, as long as we do them in moderation. Spending all days in front of the computer, both at work and at home, without taking any breaks (which are really important), is certainly unhealthy. We are equally likely to make ourselves ill by eating only meals cooked in the microwave oven or talking on the mobile phone for many hours. | 
