One gets in the bath, maybe, as a regular thing (5)
I believe the answer is:
habit
'a regular thing' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'one gets in the bath maybe' is the wordplay.
'one' becomes 'i' (Roman numeral).
'gets in' is an insertion indicator.
'maybe' indicates an anagram.
'bath' anagrammed gives 'habt'.
'i' put within 'habt' is 'HABIT'.
'as' acts as a link.
Can you help me to learn more?
(Other definitions for habit that I've seen before include "Custom; riding dress" , "Custom; clothing" , "Usual practice; garment" , "can cause addiction" , "It's worn in order" .)