I'd never say I do parkour because I don't
But when I younger I did watch a lot of Jackie Chan films so I copied a lot of what I saw.
And Jackie Chan was waaaay before Parkour was a thing.
So by my late teens I was doing this sort of stuff easily
And it expanded from there to other silly stuff which included flips or handplants or wall running
I use to have people beg me just to see me do something...
But that whole jumping from one spot to another at silly heights is just stupid.
Can I still do it now?...I don't know, haven't tried
Probably break my neck