Take turns off to relax (6)
I believe the answer is:
unwind
'to relax' is the definition.
('unwind' can be a synonym of 'relax')
'take turns' is the wordplay.
I cannot quite understand how this works, but
'take turns' could be 'wind' (I've seen this before) and 'wind' is found within the answer.
The remaining letters 'un' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'off' is the link.
Can you help me to learn more?
(Other definitions for unwind that I've seen before include "Straighten out like snake" , "Relax like spring?" .)