I can only really remember from my childhood, swinging under, over and around things, poles, rails, tree libs, etc. Doin what is called, underbars, etc.
I've always liked to run as fast as I can and go everywhere just so my mom couldn't get to me.
I guess, me always wanting to "break away" from the norm, and from family restraints landed me with a growing need for immense freedom.
All in all. I found out about parkour a week ago, I've been training rigorously since, and I'm really excited to get out there and start when I get off house arrest(don't ask).