Sweat blood

Meaning

Work very hard.

Usage

Used for describing extreme effort or sacrifice.

Origin & History

Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.

Hyperbole stressing the effort required.

Appears in motivational texts from the early 1900s.