A group of runners jog in their underwear during a 3.5 kilometer "underwear running" event at Beijing's Olympic Forest Park, Feb 26, 2012. A number of netizens organized the event, in which participants were required to run in their underwear. [Photo/CFP]
A group of runners jog in their underwear during a 3.5 kilometer "underwear running" event at Beijing's Olympic Forest Park, Feb 26, 2012. [Photo/CFP]