to eat , sleep and breathe something
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to be completely dedicated or obsessed with a particular activity, interest, or topic, to the point where it dominates a person's thoughts, actions, and daily life
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As a scientist, research is everything to Dr. Patel - he eats, sleeps, and breathes his work, and is always eager to learn more about his field.
Emma is a true artist at heart. She eats, sleeps, and breathes painting. Every spare moment she has, you can find her with a paintbrush in hand, creating beautiful works of art.
