I am not sure, but Im pretty sure lol, I think he gets so called "uitkering" in holland, its what alot of people from other countrys get, its when you get money from the gouverment because you came from another country and can't find a job or you have like an injury or handicap, if you have this you can't have a normal job that pays you like on the bill, you can only make cash when you get it from people or like delivery newspapers, I think this is the way how he gets extra cash, anyways probably not an answer on your question, its just, he trained this for what about 10-20 years? its like his routine, he trained it so long that he got a great condition for training sitdowns and hanging on a lampost, if you would train like this for 10-20 years you would probably be able to do it also, if you get used to it you can do it for a long time