Moving out of bed (5)
I believe the answer is:
astir
I believe this clue is a double definition.
'moving' is the first definition.
(I've seen this before)
'out of bed' is the second definition.
('astir' can be a synonym of 'out of bed')
(Other definitions for astir that I've seen before include "In a state of movement" , "Excited; out of bed" , "Up and about -- is art (anag)" , "In motion - out of bed" , "abroad" .)