Gets comfortable, arms back and legs folded (8)
I believe the answer is:
snuggles
'gets comfortable' is the definition.
I can't tell whether this defines the answer.
'arms back and legs folded' is the wordplay.
'arms' becomes 'guns' (gun is a kind of arm).
'back' says the letters should be written in reverse.
'and' means one lot of letters go next to another.
'folded' indicates anagramming the letters.
'guns' back-to-front is 'snug'.
'legs' with letters rearranged gives 'gles'.
'snug'+'gles'='SNUGGLES'
Can you help me to learn more?
(Another definition for snuggles that I've seen is " Gets into a snug position".)