overexert

You are not at all liable to, for you will not overexert yourself.

The sailors showed at once they did not intend to overexert themselves.

I do not want any of you to overexert at these limbering and stretching exercises.

He slowed up so that she should not be tempted to overexert herself.

Hauke took hold with all his strength and managed to do the job even though he had to overexert himself.

In Japan they go rather slowly, and refuse to overexert themselves, and quite right, too; but here they go at top speed.

How nice to see you up again; but you must be careful, very, very careful, not to overexert yourself.