几天不要跑步，不要在疼痛时候跑，给你腿一些康复的时间。

Back off on your mileage for a few days, and don't try to run through the pain. Give your legs a little time to mend.

youdao

如果住宅周围的空气污染很严重，就不要出去跑步。

You should not run outside if the air pollution is serious where you live.

youdao

在跑步前不要吃太多食物或喝太多水。

Don't drink or eat very much before a run.

youdao