can't stop once i do it..

parkour..
heard bout it?
its a wall climbing thing..hahax..bt in advance its buildings..
http://en.wikipedia.org/wiki/Parkour
i quit it last year.
this year i'd practice it.
i climb of the wall from the school to outside to eat(safe traveling time).
n climb back as well...
sometimes i ony use one hand. sometimes use, my elbow.
hahak..
bt tis year i could actually performa roll when i jump from high place to the ground.
it takes less impact.
addicted to it..
i started it since 13.
but due to lack of practice last year, i gt my hand some scratches and bruises..
can't stop it.. jz like doing it..