午睡可以弥补夜间睡眠不足,保持工作精力充沛。然而并非人人适宜。联邦德国的一些医学家最近指出,有三种人午睡有很大危险性。一种是六十五岁以上或体重超过标准百分之二十的人,另一种是血压很低的人,第三种是血液循环系统有严重障碍,特别是那些由于脑血管变窄而经常头晕的人。因为午睡后大脑的血液会流向胃部, Siesta sleep can make up for lack of sleep at night, to keep work energetic. However, not everyone is suitable. Some physicians in the Federal Republic of Germany recently pointed out that there are three people who have a great risk of having their afternoon nap. One is a person over the age of 65 or over 20% of the standard weight, the other is a person with low blood pressure, the third is a serious disorder of the blood circulation system, especially those due to cerebrovascular narrowing Often dizzy people. Because after going to bed the brain’s blood will flow to the stomach,