shape someone up

shape someone up
to get someone into good physical shape; to make someone behave or perform better. I've got to shape myself up to improve my health. The trainer was told that he'd have to shape up the boxer before the fight.
See also: shape, up
shape up

1. to improve; to reform. I want to get things shaped up around here. I guess I'd better shape up if I want to stay in school.
2. to assume a final form or structure. The game plan for the election was beginning to shape up. Her objectives began to shape up in her senior year.