One of the physiological effects of watching TV in excessive amounts is eye-strain. It is true that there are specifications for watching TV; TV should be 5 m. away from the eye, the room should be adequately lit, TV should be placed at the same height with our eyes, etc. However, these do not prevent our eyes from getting tired if we keep watching TV for a long time. Another effect is obesity, which is widely observed in people who like watching TV and eating snacks everyday (there is even a term “TV snacks” to refer to fast food that is suitable for eating in front of the TV). TV is such a powerful machine that people cannot get away from it – it is addictive.