do someone the world of good idiom
C2 UK (also do someone a world of good )使某人感到更健康（或更高兴）
to make someone feel much healthier or happier
We had a week away in the sun and it's done us both the world of good. 我们外出到一个阳光明媚的地方度了一个星期的假，这对我俩的身心都十分有益。