对久居办公室的人来说，长期缺氧可能是一个较为严重又很容易被忽略的问题。办公环境越好，这个问题就越突出。因为安有空调的密闭房间内的氧浓度要大大低于室外大气中的氧浓度。另外，如果平时少运动，肺活量会逐渐变小，吸氧量也就会减少，若同时还患有贫血、支气管炎或冠心 Long-term hypoxia may be a more serious and easily overlooked problem for those living in the office. The better the office environment, the more prominent the problem. Because of the air conditioning in airtight room oxygen concentration is much lower than the outdoor atmosphere of oxygen concentration. In addition, if less usually exercise, lung capacity will gradually become smaller, oxygen will be reduced, if at the same time also suffering from anemia, bronchitis or coronary heart