The trainer told him to keep doing the same exercise, he said he had to keep doing it until he what?\nOptions:\n- get tired\n- lose weight\n- aerobic activity\n- fatigue\n- drink water
Let's be accurate as possible. Think before you answer.
get tired
He get tired by doing same exercise.

On being told by the trainer, he kept doing the same exercise until he get tired.

.

Therefore, the answer is get tired