A gallant King Wok getting good exercise (6,1,4,4)

I believe the answer is:

taking a long walk

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'good exercise' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.

'a gallant king wok' is the wordplay.
'a gallant king wok' anagrams to 'TAKING A LONG WALK'.
Though, I'm unsure how the anagram is indicated.

'getting' acts as a link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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