eat, breathe, and sleep

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eat, breathe, and sleep (third-person singular simple present eats, breathes, and sleeps, present participle eating, breathing, and sleeping, simple past ate, breathed, and slept, past participle eaten, breathed, and slept)

1. (transitive, idiomatic, informal) To devote one's time obsessively to.
   • 2004, Adelle Jameson Tilton, The everything parents guide to children with autism:

     It is so easy to begin to eat, breathe, and sleep autism, but it will do no good — not for you, not for your spouse, and not even for your child.