kept up

simple past and past participle of keep up

(transitive) To maintain; to preserve; to prevent from deteriorating or falling.
(idiomatic, transitive) To continue with (work, etc).
(idiomatic, intransitive) To stay even or ahead.
To ensure that one remains well-informed about something.
To prevent someone from going to bed or to sleep
(obsolete) To use capital letters as much as reasonable.