Grabbed something simple and sat back (4,2,4)

I believe the answer is:

took it easy

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'sat back' is the definition.
The answer and definition can be both related to bodily activities as well as being past participle verbs.
Perhaps they are linked in a way I don't understand?

'grabbed something simple' is the wordplay.
'grabbed' becomes 'took' (I am not sure about this - if you are sure you should believe this answer much more).
'something' becomes 'it' (I've seen this in other clues).
'simple' becomes 'easy' (associated in meaning).
'took'+'it'+'easy'='TOOK IT EASY'

'and' acts as a link.

Can you help me to learn more?

I've seen this clue in The Guardian.

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