What is the origin of the idiom "eat, sleep, and breathe something" and when to use it?

The idiom "eat, sleep, and breathe something" does not have a specific origin, but it is based on the fundamental activities necessary for human survival. It means that someone is so dedicated or passionate about something that it becomes an essential part of their life, just like eating, sleeping, and breathing. This idiom describes individuals who are deeply immersed in a specific interest or activity. It shows that their thoughts, actions, and time revolve around that particular thing. It could be a hobby, job, or any other pursuit. The idiom emphasizes their strong commitment and dedication.