Meaning of the word exertion in English

What does exertion mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

exertion

US /ɪɡˈzɝː.ʃən/
UK /ɪɡˈzɜː.ʃən/

Noun

physical or mental effort

Example:
He collapsed from the sheer exertion of the climb.
Even the slightest exertion left her breathless.