Also, sweat one's guts out. Work diligently or strenuously, as in The men were sweating blood to finish the roof before the storm hit. The phrase using guts was first used about 1890, and that with blood shortly thereafter.
Suffer mental anguish, worry intensely, as in Waiting for the test results, I was sweating blood. This usage was first recorded in a work by D.H. Lawrence in 1924. Both usages are colloquial, and allude to the agony of Jesus in Gethsemane (Luke 22:44): “And being in an agony he prayed more earnestly: and his sweat was as it were great drops of blood falling down to the ground.”
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Words nearby sweat blood
Example sentences from the Web for sweat blood
Although the blood-spattered offices will be off-limits, staff have vowed to continue producing the magazine.
For nearly her entire life Beyoncé has been giving us her blood, sweat, and tears in her career.Bow Down, Bitches: How Beyoncé Turned an Elevator Brawl Into a Perfect Year|Kevin Fallon|December 31, 2014|DAILY BEAST
The Royal Family has benefited hugely from the American blood in its veins.The Real-Life ‘Downton’ Millionairesses Who Changed Britain|Tim Teeman|December 31, 2014|DAILY BEAST
The future Mr. Vergara—and star of ‘True Blood’ and ‘Magic Mike’ shares some life advice in an exclusive video.Who Is Joe Manganiello? Sofia Vergara’s Fiancé on the Value of Hard Work|The Daily Beast Video|December 29, 2014|DAILY BEAST
In its over 1,000-year history, the land has soaked in the blood of millions of people.Rebranding The Land of Mongol Warriors & Ivan The Terrible|Anna Nemtsova|December 25, 2014|DAILY BEAST
The blood that accused his friend in his heart, rushed to his face, when he repeated what had been told him.
These differences of interests will lead to disputes, ill blood, and finally to separation.
There lay Bob Rock, covered with blood, and apparently insensible.
Louis pressed his father's hand to his lips; that hand which was hardly washed from the stain of Wharton's blood!
Blood-streaked sputum is strongly suggestive of tuberculosis, and is more common in the early stages than later.A Manual of Clinical Diagnosis|James Campbell Todd