After the end of Zumba, I ran and was sick (5)
I believe the answer is:
ailed
'was sick' is the definition.
(I've seen this before)
'after the end of zumba i ran' is the wordplay.
'after' says to put letters next to each other.
'the end of' suggests the final letters.
'ran' becomes 'led' ('lead' can be a synonym of 'run').
The final letter of 'zumba' is 'a'.
'a' put next to 'i' is 'ai'.
'ai'+'led'='AILED'
'and' is the link.
(Other definitions for ailed that I've seen before include "Troubled" , "Became sick" , "was on the blink?" , "Didn't feel well" , "Was ill" .)