你有过这样的经历吗?当你蹲在地上一段时间后,猛地站起身来,立即觉得天旋地转,头晕目眩,严重的甚至两眼一黑好像就要昏过去似的。这都是因为心脏来不及向头部供应血液,脑部暂时缺血造成的。不过矮个子就有优势了,因为理论上个子越高的人,晕得越严重。 Have you had such an experience? When you squat on the ground after a period of time, suddenly stood up, immediately feel dizzy, dizzy, serious or even black eyes seem to be fainted. This is because the heart is too late to supply blood to the head, the brain caused by temporary ischemia. However, there are short advantages, because in theory the higher the person, the more serious halo.