Cctv.com news: in recent years, a variety of marathon in China is very fire, running exercise and physical fitness is good, but the exercise should also pay attention to the scientific and reasonable distribution of strength. The 30 day, the twenty-first session of the 2016 Shanghai International Marathon start running shots. The game appeared in a thrilling scene, a contestant in the finish after the sudden cardiac arrest, fortunately timely rescue volunteers, saved his life.