Simple past tense and past participle of overexert.(verb)
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Use "overexerted" in a sentence
"The result was that they overexerted themselves and generally ignored the medical safeguards their condition required."
"Of course, if they had paced themselves more carefully and not overexerted, they could have kept on pedaling as long as I did."
"LEMON: The only reason you did it because you thought you are overexerted yourself on a treadmill, so you wouldn't have even gone in this early, right?"