It requires strategy, mind control, physical stamina and lots of training.

Biography is no vocation for old men; it requires physical stamina.

As a competitive sport, it requires skill, speed and stamina.

Shooting carefully at a distance should not require the energy and stamina of a young man.

The longest events require stamina and determination to keep going till the very end.

This unique racing surface requires less energy and stamina of a horse.

But a lack of promising jobs that require more strength and stamina than study is also important.

It is hard work that requires discipline, physical stamina and imagination.

Coming to terms with that new reality, winning this war, will require discipline, stamina and sacrifice.

Travelling around much of Africa often requires time, patience and stamina.