Generally, there are morning runs, mainly to speed up blood circulation and let the body "live" from a static state. The so-called arm-swinging and chest-expanding exercises are all elastic stretching exercises, which are definitely not allowed from the point of view of sports and fitness, and the damage to the body (mainly joints) is also considerable! Some of the best static stretching, which is mainly learned in the gym, can be searched online! Of course, because high school students are still active, it is great to give them some less intense aerobics moves! And the fun is much better than broadcast gymnastics!