“美国心脏协会”指出 ,轮值夜班者不但脾气容易暴躁 ,还会较易患心脏疾病。值夜班职员比其他轮值上白班者 ,其体内加速心脏运作的神经比较缓慢。负责该项研究的富兰博士表示 ,“这证明人体内的生理时钟不会因值班时间表而改变 ,人们难以适应值夜班的工作 ,致使值夜班者生病的 “American Heart Association” pointed out that the night shift who not only temper easy temper, but also more susceptible to heart disease. Night shift staff shift duty more than any other shift in the body to speed up the operation of the heart of the nerves more slowly. Dr. Fullan, who is in charge of the study, said: "This proves that the physiological clock in the body does not change due to the shift schedule and that people are struggling to adapt to work on night shifts, causing night-shift sickness