Right from the first verse, the lyrics of this song can totally be related to running: "' Cause sometimes you feel tired, feel weak, and when you feel weak, you feel like you wanna just give up."

从第一个，歌词完全地跟跑步有关：“因为有时你感到疲倦，感到虚弱，当你感到虚弱时，你感觉你想要放弃。”

youdao

By the mid-1950s, in fact, the townships were home to a majority of the country's black population, but they were such rough and rowdy places that many of the rural dispossessed chose not to join the urban rush too weak or too poor, too unskilled and too uneducated, too tired and too frightened to be comfortable in them.

NPR: One Boy's Heroism in the Face of AIDS