Long blow "220V Cooling Fan" nor desirable. That just stopped blowing cold body, you will feel the body is still warm, as long blowing comfortable. However, long time at the fan blowing, body temperature with a large number of sweat evaporation decreases, prone to colds, flu, abdominal pain, diarrhea and other diseases. Hair generally a half-hour to one hour is appropriate. When sweating more, do not immediately sit or repose under circumstances hair, because the body surface blood vessels to dilate, was suddenly cool breeze blowing, tend to cause vasoconstriction, perspiration immediately stop, causing the body heat production and heat Heat loss of balance, but excess excretion no. Correct placement is also very important, "220V Cooling Fan" from the human body should not be too close, too close hair makes blood circulation and sweat circulation gap is too large, the nerve center will be out of balance, once a long time, the various organs of the body will feel tired so general discomfort. Best of "220V Cooling Fan" placement around the body two meters distance, making wind more soft and uniform.