used to suggest that it would be a good idea for sb to do sth :
It wouldn't do you any harm to smarten yourself up.
used to suggest that it would be a good idea for sb to do sth :
It wouldn't do you any harm to smarten yourself up.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005