（北京23日综合电）1月17日，中国湖南省常德市一名14岁男生在长时间学习后，起身伸懒腰时突然晕倒。他先是跌坐在沙发上，头部磕碰到桌面，随后身体失控栽倒在地。
孩子母亲郑女士向记者表示，事发时候是上午10点多，孩子从凌晨5、6点就开始写作业，久坐了四五个小时。看到孩子突然晕倒，自己一时也没反应过来，以为是在跟她开玩笑。幸运的是，孩子身体无其他异常表现，晕倒时也没受伤。
长时间的静坐不动，加上可能的疲劳、缺水或低血糖，容易导致一过性脑供血不足，进而引发头晕、眼黑甚至晕厥，2小时就会形成下肢血栓。
肩颈疼痛：长期低头或弯腰工作，容易导致颈部、肩部和背部的肌肉疲劳，产生疼痛或不适。
腰椎问题：久坐不动会对腰椎造成过大压力，导致腰痛甚至椎间盘突出。
眼睛疲劳：长时间盯着电脑屏幕，眼睛容易感到干涩、刺痛、视力模糊等不适。
血液循环不畅：久坐会导致血液循环不畅，容易出现手脚麻木、浮肿等问题，严重时甚至增加血栓的风险。
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