Found this video on youtube, check out the guy doing dance on a tread mill. Yes this should not be tried at home. Looking at the reaction of the people around him you can easily guess that he has been doing it for a long time so the people might not be interested in his dance. But it is obviously funny and amusing for us. According the comments on youtube his name is Marcus. This stuff should not be tried at home or gym, remember he is an professional.
Same video with some music