it wouldn't do (someone) any harm (to do something)

it wouldn't do (someone) any harm (to do something)

It would or may be good, pragmatic, or beneficial for someone (to do something). You know, it wouldn't do you any harm to comb your hair from time to time. I know that the managers are trying to cut costs, but it wouldn't do them any harm to treat us to a staff lunch every once in a while. Jonathan should try and spend more time with his mother. It wouldn't do him any harm, after all.See also: any, harm