don't knock yourself out

don't knock yourself out

Don't expend too much energy or try too hard (doing something), as it isn't worth the trouble. You can clean the house if you want, but don't knock yourself out—the kids will just make a mess of it again anyway.
See also: knock, out
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
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So don't knock yourself out removing the seat or you just might knock out the sensor surveyor unit!
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