"220V Cooling Fan" who should not be facing the wind, blowing straight, invade the body, especially in frail or sweating, it is best to let a fan blow in one corner. Children, elderly, frail people, but should use less fan blowing, but can be "220V Cooling Fan" regulate indoor air, thereby indirectly cooling. When the dripping sweat but can not direct access to fan blowing, so as not to cause surface perspiration disorders, leading to destruction of the human circulation, it is easy to cause a stroke. When the wind should not open too much sleep, during sleep, the body circulation slows down people, "220V Cooling Fan" and this time the body is most vulnerable when facing the body of excessive wind blowing, it will not cause human extreme adapt, symptoms of human weakness, and in severe cases a stroke.