Excited — exhausted (10)
I believe the answer is:
breathless
I believe this clue is a double definition.
'excited' is the first definition.
(thesaurus)
'exhausted' is the second definition.
(thesaurus)
(Other definitions for breathless that I've seen before include "panting?" , "Spent" , "Gasping for air" , "Short-winded" , "Still" .)