Wednesday Feb. 19, 2014 22:58 ET

Kelly and Adam talk endurance and pain

Cross-country skiers compete in men's team sprint
Sami Jauhojaervi of Finland, Nikita Kriukov of Russia, Erik Bjornsen of the United States and Teodor Peterson of Sweden compete in the men's team sprint classic semifinals Wednesday of the 2014 Sochi Winter Olympics. (Richard Heathcote/Getty Images)
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