一鼓作气 (yì gǔ zuò qì): in a spurt of energy

In the last week before the exam, he slept only five hours a day and finished reviewing all three books in one go.

On moving day, we carried all the boxes up to the sixth floor in one burst of energy. Although we were sweating and exhausted, no one complained.

While writing his thesis, he turned off his phone and wrote for six hours straight, finally finishing the first draft before dawn.

While climbing the mountain, everyone encouraged each other and made it to the summit in one sustained effort, where they saw a beautiful sunrise.