hold one's breath vs inbreathe

hold one's breath

verb
  • Used other than figuratively or idiomatically: see hold, one's, breath. To keep air in one's lungs, pausing noticeably before exhaling after previously inhaling. 

  • To wait expectantly for something to happen soon. 

inbreathe

verb
  • To draw in as breath; inhale; inspire. 

  • To breathe (something) in; imbreathe. 

  • To inspire (a person); communicate by inspiration; infuse by breathing. 

How often have the words hold one's breath and inbreathe occurred in a corpus of books? (source: Google Ngram Viewer )