Folk exercise by pole dancing (6)
I believe the answer is:
people
'folk' is the definition.
(I've seen this before)
'exercise by pole dancing' is the wordplay.
'exercise' becomes 'pe' (Physical Education).
'by' is a charade indicator (letters next to each other).
'dancing' indicates an anagram.
'pole' is an anagram of 'ople'.
'pe'+'ople'='PEOPLE'
(Other definitions for people that I've seen before include "Newspaper" , "Mortals" , "Race - mankind" , "Humans in general" , "Humankind" .)