Going in for raising (6,2)

I believe the answer is:

taking up

I'm a little stuck... Click here to teach me more about this clue!

'raising' is the definition.
The definition and answer can be both related to change as well as being present participle verbs.
Perhaps there's a link between them I don't understand?

'going in' is the wordplay.
I cannot really understand how this works, but
'in' is within the answer.
This may be the basis of the clue (or it may be nonsense).

'for' acts as a link.

Can you help me to learn more?

I've seen this clue in the Evening Standard.

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