Women practice yoga in Changchun, Jilin province, on Aug 8, 2012. Chinese people celebrate the fourth National Fitness Day with various sports exercises on Wednesday. Aug 8 was made the National Fitness Day by the State Council in 2009 to remember Beijing 2008 Olympics Games and meet growing demand for public sports, as well as to help people establish a healthy lifestyle with exercise. [Photo/Xinhua]

Citizens kick shuttlecock on the fourth National Fitness Day in Changchun, Jilin province, Aug 8, 2012. [Photo/Xinhua]

Ten thousand citizens in Shenyang, Liaoning province practice the 9th Edition of the People's Radio Calisthenics to celebrate the fourth National Fitness Day, on Aug 8, 2012. [Photo/Xinhua]

Children play chess in the national chess and card competition in Nanchang, Jiangxi province, Aug 8, 2012. More than 200 people took part in the competition which included games of chess, Chinese chess, and bridge. [Photo/Xinhua]

Players perform taekwondo to celebrate the fourth National Fitness Day in Guiyang, Guilin province, on Aug 8, 2012. More than 1,000 people participate in the demonstrating various kind of exercises. [Photo/Xinhua]

Kids perform martial art at the launch ceremony of Fitness Month of Xi'an, Shannxi province on the fourth National Fitness Day on Aug 8, 2012. [Photo/Xinhua]