Because Fackley running is a researched way to exercise endurance, which is relatively more scientific and reasonable.

Tolek Run is a method invented by Scandinavians to develop people's endurance by using topography, landforms or artificially set acceleration and deceleration sections. When running, the exerciser should change the speed according to the change of self-feeling and terrain, but he should make some regulations on the number of times of accelerating running in the whole course or a certain section, and he can freely decide the length of deceleration section and the structure of Tolek.