Though able to stand on one's own two feet, it's good to get back in bed (5)
I believe the answer is:
biped
'though able to stand on one's own two feet' is the definition.
I can't judge whether this definition defines the answer.
'good to get back in bed' is the wordplay.
'good' becomes 'pi' (old-fashioned term for pious).
'to get back' shows that the letters should be reversed in order (I've seen 'gotten back' mean this).
'in' means one lot of letters goes inside another.
'pi' backwards is 'ip'.
'ip' placed inside 'bed' is 'BIPED'.
'it's' is the link.
Can you help me to learn more?
(Other definitions for biped that I've seen before include "Walker on two feet" , "Two-legged animal" , "One walking on two legs" , "Creature with two feet" , "Animal walking on two feet" .)