How to good use 220 v AC Cooling Fan?

"220V AC Cooling Fan" should not be long open fan, turn fan too long, the body will produce discomfort phenomenon. With the large body temperature will reduce the evaporation of sweat and the passage of time, it is easy to cause colds, abdominal pain, diarrhea and other symptoms, should be appropriate to open, it is recommended to open time is about one hour is appropriate.
"220V AC Cooling Fan" correct placement is also very important, fans from the human body should not be too close, too close to the hair so that the blood circulation and sweat circulation gap is too large, the nerve center will be out of balance, once the time is too long, the various organs of the human body will feel tired, "220V AC Cooling Fan" so general discomfort. The best placement of fans around the body two meters distance, making wind more soft and uniform.