Hi everyone,
in fact, it is interesting subject..
there are a lot of things people think they are good; however, they are not.
Air conditioner is one of these things. majority of people think that the air conditioner is good because it make the atmosphere nicer than before.
However, air conditional is one of the reasons that effect people's health. As the temperature difference between indoor and outdoor, people often will feel hot and cold, this will result in the body conditioning system disorders. that will lead to people suffering from headaches, cold,flu, and many health problems.