Hi , when would i ever have to use this option ?
Whenever i've had a horse injured i've never been told it might need a wind up so i've never used it and i've never been advised in game to use wind op by a vets diagnosis etc.
Any help ?

I'm not sure of the exact wording but after a race your jockey will say something to the effect of "The horse was breathing funny" or "Making strange noises"

I've had it happen quite a few times.

Ok thanks for that , i haven't had it once yet and i'm on my 8th season .

They are very seldom, however, i do try and use this option for when horses with higher ability dont seem to be performing as well. Not sure whether it has helped all that much. Its part of my procedure before i use blinkers etc, or geld a horse.

Only issue with the wind op option is the horse can run immediately after which is unrealistic ofc.

If I remember right, in the training section the head lad told me ("i") that the horse has breathing problems.