Expression: 'Are you fond of swimming? How often do you go it?'

[Tom]

Hi

Could you please tell me how you find the use of it in the following expression? I do not want to repeat "swimming" again.

'Are you fond of swimming? How often do you go it?'

Tom

[Conchita]

The use of 'it' is fine, but you need to change the verb:

How often do you do it?