FUYANG, Aug. 8, 2016 (Xinhua) -- People practice roller skating during an activity to mark the national Fitness Day in Fuyang, east China's Anhui Province, Aug. 8, 2016. The national Fitness Day falls on Monday. (Xinhua/Lu Qijian)

QIONGHAI, Aug. 8, 2016 (Xinhua) -- People exercise at an activity to mark the national Fitness Day in Qionghai, south China's Hainan Province, Aug. 8, 2016. The national Fitness Day falls on Monday. (Xinhua/Meng Zhongde)

KAIFENG, Aug. 8, 2016 (Xinhua) -- People practice yoga in Shangrao, east China's Jiangxi Province, Aug. 8, 2016. The national Fitness Day falls on Monday. (Xinhua/Ding Minghua)

KAIFENG, Aug. 8, 2016 (Xinhua) -- Taichi fan lovers practice at the opening ceremony of an activity to mark the national Fitness Day in Kaifeng, central China's Henan Province, Aug. 8, 2016. The national Fitness Day falls on Monday. (Xinhua/Li Junsheng)