Second wind

There is no need to describe how they toiled back up the gorge. It was pretty hard work, but oddly enough everyone felt more cheerful. They were getting their second wind; and the word supper had had a wonderful effect.

Don't forget your second wind / sooner or later you'll feel that momentum kick in

As I get up to leave, she [Tracey Emin] gets a second wind and starts to rant about the state of education, the NHS, the Post Office, the contaminated blood scandal …

X gained a second wind last year when Mr. Trump won the election. Some advertisers, courted by Ms. Yaccarino, returned to the platform partly because of Mr. Musk’s adjacency to the president.