At home, female starts to enjoy regular work out (5)
I believe the answer is:
infer
'work out' is the definition.
(I've seen this before)
'at home female starts to enjoy regular' is the wordplay.
'at home' becomes 'in' ('in' can be similar in meaning to 'at home').
'female' becomes 'f' (abbreviation).
'starts to' says to take the initial letters.
The first letters of 'enjoy regular' is 'er'.
'in'+'f'+'er'='INFER'
(Other definitions for infer that I've seen before include "Draw a conclusion" , "Work out" , "Conjecture" , "Imply" , "Conclude or judge from facts" .)