From Longman Dictionary of Contemporary Englishsweat something ↔ off phrasal verbSWEATto lose weight by sweating a lot → sweat→ See Verb table
Examples from the Corpus
sweat off• I want each pony washed down and all the sweat scraped off.• Within a minute the sweat was pouring off him and his jacket sticking to his back.• I should have sat up, eyes staring and sweat pouring off my forehead like in some old Hammer Brothers movie.• In those days, the sweat would fall off my hands and I'd hear it hitting the floor.• The sweat poured off the doctor's face.• The work was hard and the sweat ran off their brows.• Face to face, in perfect synchronicity, they grin and swoop as the sweat drips off them.• After stirring up a serious sweat we were off to Anthem at Ten15 Folsom. 