肩かたの力ちからを抜ぬく

expression, godan verb (-ku)

relax; let the tension out of one's shoulders; not take oneself too seriously

Idiomatic expression meaning to release physical or mental tension, often used when someone is being too stiff or serious.

• 面めん接せつの前まえは、肩かたの力ちからを抜ぬいて深しん呼こ吸きゅうしよう。

  Before the interview, relax and take a deep breath.

• 彼かれはいつも肩かたの力ちからを抜ぬいていて、話はなしやすい。

  He's always relaxed and easy to talk to.