breathing room
noun /ˈbriːðɪŋ ruːm/,  /ˈbriːðɪŋ rʊm/
  /ˈbriːðɪŋ ruːm/,  /ˈbriːðɪŋ rʊm/
[uncountable] (especially North American English)- (also breathing space British and North American English)a short rest in the middle of a period of mental or physical effort- I have very little breathing room in my afternoon schedule.
 
- enough space to breathe comfortably