be in a muck sweat vs perspire

be in a muck sweat

perspire

verb
  • To emit (sweat or perspiration) through the skin's pores. 

  • To be evacuated or excreted, or to exude, through the pores of the skin. 

How often have the words be in a muck sweat and perspire occurred in a corpus of books? (source: Google Ngram Viewer )