Exercise judges and journalists (5,5)
I believe the answer is:
bench press
'exercise' is the definition.
(bench press is a kind of exercise)
'judges and journalists' is the wordplay.
'judges' becomes 'bench' (name for a judge's seat, or for judges themselves).
'and' means one lot of letters go next to another.
'journalists' becomes 'press' (I've seen this before).
'bench'+'press'='BENCH PRESS'
(Other definitions for bench press that I've seen before include "Weighty exercise" , "lift" , "Show of strength" .)