Heal or rally (7)
I believe the answer is:
recover
I believe this is a double definition.
'heal' is the first definition.
(thesaurus)
'rally' is the second definition.
(rally can mean to recover from illness)
(Other definitions for recover that I've seen before include "Get well again" , "Get better; retrieve" , "Regain" , "Find" , "Recuperate" .)