The relatively warm conditions may favor dogs trained in the Lower 48 states. The mixed breed huskies favored by mushers perform best in sub-zero weather, and dogs trained in relatively warm conditions will be more acclimated. Until reaching the cold of the Alaska Interior, most mushers prefer to run their teams during the night and sleep during the day, to take advantage of the colder temperatures. On the other hand, unseasonably warm temperatures made is more difficult to train sled dogs in Montana and other locations. Sørlie, Buser, Jonrowe, and Seavey trained in warmer climates, while Boulding trained his dogs in the cold Interior.