 Complete the following phrase:  Christiansen began his career by racing in biathlon and cross-country skiing as a junior on the national level. In his youth, his greatest idol was Ole Einar Bjørndalen. Christiansen learned much about how to train from literature of and about Bjørndalen, and was inspired by Bjørndalens training mentality, and started training a lot and hard, from a very early age. On the last day of the 