From Longman Dictionary of Contemporary Englishlive and breathe somethinglive and breathe somethingENJOY/LIKE DOING somethingto enjoy doing something so much that you spend most of your time on it Politics is the stuff I live and breathe. → live
Examples from the Corpus
live and breathe something• And how they could live and breathe and make more of themselves.• Fans live and breathe for either Celtic or Rangers.• Residents of the city live and breathe high school football.• I won't ever forget you, lad; not while I live and breathe, I won't.• Bob Darnell lives and breathes motor scooters.• Do you live and breathe whatever the position is about?-Do you have the skills nary for this position? 