According to a German professor, the soreness comes from straining your muscles in an uncommon way, for example, jumping on a bicycle for a ride, because you haven't ridden in a long time.

据一个德国教授说，疼痛来自以不平常的方式拉伸你的肌肉，例如，骑上自行车兜风会疼痛，因为你已经很长时间没骑车了。

youdao

I'd love a ride home—if it's not out of your way.

我很想搭你的车回家，如果这不叫你绕路的话。

《牛津词典》

According to a German professor, the soreness comes from straining your muscles in an uncommon way. For example, jumping on a bicycle for a ride, because you haven't ridden in a long time.

一个德国教授认为，肌肉酸痛是因为肌肉拉伸的方式与平常有所不同，例如，长时间没有骑自行车之后再骑车兜风就会产生肌肉酸痛。

youdao

Two hours later after your bike ride you check the status and bingo thousands of dollars have already poured in on your way to a six-figure campaign.

FORBES: Diary of a Mad Entrepreneur and His 6-Figure Kickstarter Launch