Justin Freeman is a US Olympian in cross-country skiing. He races for the Saab Salomon Factory Team – http://www.skipost.com Level five, which I wrote about in my last article, is about improving race performance by working at a higher pace. Level three, which improves racing by working at a lower pace, is the natural complement to this training. Physiologically, the major goal of level three training is to improve lactate threshold. Your lactate threshold is...
