One's spent after exercise like this (4)
I believe the answer is:
peso
'one's spent after exercise like this' is the definition.
The definition suggests a singular noun which matches the answer.
'after exercise like this' is the wordplay.
'after' is a charade indicator (letters next to each other).
'exercise' becomes 'pe' (Physical Education).
'like this' becomes 'so'.
'pe' put next to 'so' is 'PESO'.
Can you help me to learn more?
(Other definitions for peso that I've seen before include "Mexican monetary unit" , "Manuel's fiver" , "Latin American money" , "Mexican coin" , "Mexican dollar" .)