SOCHI, RUSSIA – FEBRUARY 08: Marit Bjoergen (bottom) of Norway, Charlotte Kalla (C) of Sweden and Therese Johaug of Norway collapse on the snow after competing in the Ladies’ Skiathlon 7.5 km Classic + 7.5 km Free during day one of the Sochi 2014 Winter Olympics at Laura Cross-country Ski & Biathlon Center on February 8, 2014 in Sochi, Russia. (Photo by Clive Mason/Getty Images)