1. to exert oneself too much; to use too much physical or mental effort
Usage: third person singular present tense of overexert

Examples

• She overexerts herself at the gym and often feels exhausted afterward.
• The coach warned the team not to overexert during practice before the big game.
• He overexerts his mind by studying for twelve hours straight.
• The doctor advised her not to overexert while recovering from surgery.
• When someone overexerts their muscles, they risk injury.
• The athlete overexerts during training and needs more rest days.