push (someone) to the limit

Translations
доводить (кого-то) до предела
The coach pushed the athletes to the limit during training.
Тренер довел спортсменов до предела во время тренировки.
Definitions
To challenge or test someone to their maximum capacity or endurance, often in a demanding or stressful situation.
Words
limit

noun
предел
push

verb
толкать