Only taking exercise in it in front of everybody! (6)

I believe the answer is:

openly

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'in it in front of everybody' is the definition.
I can't tell whether this definition defines the answer.

'only taking exercise' is the wordplay.
'taking' indicates putting letters inside.
'exercise' becomes 'pe' (Physical Education).
'only' going around 'pe' is 'OPENLY'.

Can you help me to learn more?

(Other definitions for openly that I've seen before include "In an overt way" , "without secrecy" , "Without concealment, frankly" , "In public" , "Candidly, without concealment." .)

I've seen this clue in the Evening Standard.

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