The question that people tend to ask themself is often Can I do parkour, when it should be can I train parkour. It seems like some people believe that you’re either born to ''do'' parkour or you’re not. This is not the case. Parkour is not some kind of magic ability, and people like Daniel Illabaca, David Belle - the whole Yamakasi, wasn’t born to ''do'' parkour. They trained and practise - and sure - we’re all genetically better att certain areas in parkour (and indeed in general life), but in the end of the day, It depends if you train and practise or not. Parkour isn’t going out on the internet and copy other people and have the same goals as them. It’s about making up your own mind and train for the reason that please you.
So the question is totally up to whenever you’re physically capable to walk and train. If your body is fully functional there won’t be no problem. And with functional I mean that you don’t have any serious physical injuries or such.
Also, I’d like to add that your goal not neccesary has to be to reach your ’’full’’ potential. Diffrent people have diffrent goals. Some train because It’s fun, some train because they want to try it, some train because they wan’t to experience more of it, some train to reach their full potential, some train to keep themself in shape etcetc. The decision is yours.
It doesn’t matter if you compare someone that have been training parkour for a month with someone that have been into it for over twenty years, like the Yamaksi, because they all have the same goals: to improve. Since, parkour, or freerunning if you wish, isn’t competetive, there are no restrictions on how much you should improve or in what directions.
So, keep a good mentality and enjoy your training, and don’t compare yourself to others, or try to copy others, find your own pace, your own goals, and try to enjoy it as much as possible and find peace in your way of training it.
