Regularly cleans back in tub -- not hot -- it's cooled down after running (6)
I believe the answer is:
stable
'cooled down after running' is the definition.
'stable' can be an answer for 'running' (thesaurus). I am unsure of the 'cooled down after' bit.
'regularly cleans back in tub not hot it's' is the wordplay.
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
'back in' suggests the final letters (the 'back' of the word).
'hot' is an anagram indicator (letters heated up or stimulated into a new order).
'it' becomes 'e' ('e' can mean 'electronic' which is similar to 'IT').
The final letters of 'tub not' are 'bt'.
The alternate letters of 'cleans' are 'las'.
'las'+'bt'='lasbt'
'lasbt' with letters rearranged gives 'stabl'.
'stabl'+'e'='STABLE'
Can you help me to learn more?
(Other definitions for stable that I've seen before include "Bleats (anag)" , "Firm - building for animals" , "Maintaining equilibrium" , "Bleats in a horse-house" , "Firm - building for horses" .)