be living proof of something

be living proof of (something)

To serve as an example for why a particular statement or concept is true. As a former slacker, I know that you can turn your life around if you work hard enough—I'm living proof of that.
See also: living, of, proof

be ˌliving ˈproof of something

show something is true simply by being alive or existing: He plays tennis and golf. He’s living proof that a heart attack doesn’t mean the end of an active life.
See also: living, of, proof, something
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