marathoner

On the other hand, the ultra-marathoner might outlive us all.

另一方面，终极拉松运动员可能比我们都要长寿。

Ed Eyestone, a two-time Olympic marathoner and men's cross-country coach at Brigham Young University, has a master's degree in exercise physiology.

这组渐进式乳酸门槛跑的关键理念是每若干英里逐级递增的配速。这样是为了训练你在跑步初期保持耐心，而教会你如何在双腿疲劳的时候跑得更快。