hello. I saw this video on youtube, about Michael anticravity shoes and how they work did te know about them?

I feel kind of stubid after seeng that, but I really believed that he did it da himself... well of course it wouldn´t make much sense, but now well I´m really suprised :o it´s hard to believe after all these years when I have been thinking, how can he do that :P
the video was link