Now you can yourself guess the reason why he mustn't do anything to over-exert his heart.
Might not the child be attacked in the same way if obliged to over-exert herself?
In his state of health, he's been fool enough to over-exert himself.
It is too far and Mrs. Case warns us not to over-exert, paddling.
You had better go with them, and see they do not over-exert themselves.
I will employ a labouring man to help you, one who will do the heavy work, as I do not want you to over-exert yourself.
All the real work was done by the women, and even they took care not to over-exert themselves.
"You must not over-exert yourself," he urged, with a serious solicitude that thrilled her.
Miss Beach was installed once more in her own home, though under strict orders from the doctor not to over-exert herself.
De Forest felt very sorry, and tenderly said she must not over-exert herself.