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大热天,一些贪图凉快的人喜欢打开电风扇直吹,很长时间不关,殊不知这样会给健康带来不良的影响。电扇(尤其不摇头的)风源集中,风力大,而且总是吹在体表的一些固定部位,吹到风的皮肤温度下降,毛细血管收缩,吹不到的温度仍较高,毛细血管继续扩张,个别人在汗流浃背时,一下子将电风扇调到最大限度,结果因降温太急而导致感冒;夏夜躺在电风扇下睡觉的人,就更易生病了。
On a hot day, some coolers like cool fans like to open the straight blow, a long time off, everyone knows that this will bring adverse health effects. Fans (especially not shook his head) the source of the wind concentrated, windy, but always blowing some fixed parts of the body surface, the temperature of the skin blowing down the wind, capillary contraction, the temperature can not be blown, the capillaries continue Expansion, some people in the sweat, all of a sudden the electric fan to the maximum extent, the result of too cold and lead to colds; lying under the fans sleep under the summer, the more likely to get sick.