室内运动如今已不再是青年人的专属,很多老年朋友也是健身房的常客。虽然很多人选择室外运动,但是由于空气质量的问题,越来越多的人在出门锻炼时都为PM2.5所纠结。而室内运动不仅不受空气质量的影响,还有温度恒定、无风、无尘等很多优点。王大爷是退休体育老师,喜欢打乒乓球。他在家门口的健身房办了一张年卡,每天早上九点准时到 Indoor sports are no longer exclusive to young people, many elderly friends are also gym regulars. Although many people choose outdoor sports, but due to air quality problems, more and more people go out to exercise PM2.5 tangled. The indoor movement is not only not affected by the air quality, as well as temperature, wind, dust and many other advantages. Uncle Wang is a retired sports teacher, like to play table tennis. He did an annual card at the gym in front of his house, arriving at 9 am every morning