Continued and prevented one from going to bed (4,2)

'continued' is the definition.
(keeping up is a kind of continuing)

'prevented one from going to bed' is the wordplay.
'prevented' becomes 'kept' ('keep' can be a synonym of 'prevent').
'one from' says to put letters next to each other.
'going to bed' becomes 'up' (I can't explain this - if you can you should give a lot more credence to this answer).
'kept'+'up'='KEPT UP'

'and' is the link.

Can you help me to learn more?