Winter Olympics superstar Marit Bjorgen quits, says not motivated enough

Norway`s legendary cross-country skier Marit Bjorgen, who won an eighth gold medal at last month`s Winter Olympics, on Friday said she would call it quits at the age of 38. "I don`t feel I have the motivation required to give 100 percent for another season, that`s why I`m quitting," she told Norwegian public broadcaster NRK.