Yes, it may be a discipline, but other sports can also be disciplines as well.
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it involves alot of athleticism and some people who have good sponsors go pro....my bros old parkour coach did all the moves in assasins creed and the moves for slade in batman arkham origins....so there is a possibility it could bring in the bank....and if your in really good shape, making money or happy with what your doing... pretty sure they dont give a shit what negative things people say about it