身みが入はいる

expression, godan verb (-ru)

put one's heart into; be absorbed in; give one's all

Used when someone becomes fully engaged or absorbed in an activity, often with a sense of enthusiasm or dedication. Commonly appears in negative form 身が入らない to express lack of focus.

• 最さい近きん、仕し事ごとに身みが入はいらない。

  Lately, I can't get into my work.

• 彼かれは練れん習しゅうに身みが入はいっている。

  He is putting his heart into practice.