transitive + intransitive
: to exert (oneself) too much
- Muriel was sent to bed at the slightest symptom and warned against overexerting herself …
- —Garrison Keillor
- There are two types of heat stroke: exertional, which typically affects active people who overexert themselves in heat, and passive, which generally involves elderly or sedentary people who are exposed to high temperatures.
- —Andrew Weil
- People at highest risk of heat-related illness include the very young, the elderly and those of any age who overexert in the heat.
- —Don Colburn
an injury caused by overexertion