一位老知识分子,遭遇突发事件受到精神打击,加之刚刚出差归来,旅途劳顿,连日哈欠连天,家人都没在意。没想到一日早晨醒来流涎不已,语言塞滞,送到医院确诊为中风。此事提醒人们,哈欠频频,要防中风。在打哈欠时,通过深吸气,使胸内压下降,静脉血大量回流到心脏,以增加心血输出,达到改善脑部供血供氧的目的。在这个意义上说,脑组织缺氧愈严重,打哈欠也愈频繁。这是身体发出的红色信号,它告诉你,身体已经严重缺氧, An old intellectual who suffered a mental blow in an unexpected incident and who had just returned from a business trip, suffered from a journeying on the road and yawned for days did not care for their families. Did not expect to wake up one morning drooling, language stagnation, sent to the hospital diagnosed as stroke. The matter reminds people that yawning is frequent and that it is necessary to prevent a stroke. In yawning, through deep breathing, the thoracic pressure drop, a large number of venous return to the heart, in order to increase blood output, to achieve the purpose of improving brain blood supply. In this sense, the more severe hypoxia in the brain tissue, the more yawning. This is the red signal sent by the body, it tells you that the body has a serious hypoxia,