Ines Brunn is a pioneer in China's fixed-gear bike scene. The 37-year-old German opened a bike shop in 2009 to encourage more people to ride this up-and-coming style. Brunn still spends most of her time promoting fixed-gear riding. Her message is clear: Riding is good for personal health and for the environment.

Check out this video featuring Brunn and her bike shop, Natooke, to get a feel for why fixed-gear biking is growing so popular in Beijing.