More women than men in China practise yoga and the urge to stay healthy and look young is pushing its rapid popularity in richer cities across the country. China’s first “Blue Book” or official research on the ancient Indian tradition found that old links between “pure” yoga from India and traditional Chinese culture, including Tai Chi and traditional Chinese medicine, have aided the spread of the practice here. The country now has about 10,800 registered yoga teaching centers, the Blue Book titled China Yoga Industry Development Report said. It was published by the top think tank, the Chinese Academy of Social Sciences (CASS). Beijing, Shanghai, Guangzhou and Shenzhen top the list of cities with most yoga centres, said CASS’s Yongjian Zhang, who was among the dozen scholars from different universities who worked on the book from May 2015. Research found the incidence of yoga centres increased in cities where average income is high.