Go to the office, maybe work out after a change of heart (7)
I believe the answer is:
commute
'go' is the definition.
(thesaurus)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for commute that I've seen before include "Travel daily to work; mitigate" , "Travel some distance to and from work" , "Travel into the city to work" , "Travel regularly to work" , "Exchange - travel to work" .)