在炎热的夏天,有些人使用了空调还嫌热,而有些人却连电扇都不敢用,稍吹一下就怕冷。还有的人一见天下雨了就赶快穿较厚的衣服,要不就冷得难受。冬天,在寒冷的环境中,有的人衣着单薄,甚至去冬泳;而有些人尤其是女性却特别怕冷,刚一入冬就穿的严严实实,害怕冻着感冒。这些人为什么特别怕冷呢?不久前,美国营养学家贝尔德和宾夕法尼亚州大学医学教授鲁卡斯基 In the hot summer, some people use the air conditioner is too hot, but some people even use the fans are not used, a little blow to fear cold. Some people see a rainy day quickly wear thick clothes, or cold uncomfortable. In winter, some people are flimsy and even go winter swimming in a cold environment. Some people, especially women, are particularly afraid of the cold. They wear tight winter clothes and are afraid of freezing the cold. Why these people particularly afraid of cold? Not long ago, the United States nutritionist Baird and University of Pennsylvania medical professor Lucaski