Robert Oberst of the United States undergoes the truck pull competition during the final of the 2013 World's Strongest Man competition in Sanya, South China's Hainan Province, Aug. 23, 2013. (Xinhua/Zhang Yongfeng)

Hafthor Bjornsson of Iceland undergoes the super yoke competition with 1,050 pounds on the shoulder during the final of the 2013 World's Strongest Man competition in Sanya, South China's Hainan Province, Aug. 23, 2013. (Xinhua/Zhang Yongfeng)

Zydrunas Savickas of Lithuania undergoes the super yoke competition with 1,050 pounds on the shoulder during the final of the 2013 World's Strongest Man competition in Sanya, South China's Hainan Province, Aug. 23, 2013. (Xinhua/Zhang Yongfeng)