That's odd. My husband just tried this last week. I, however, did not try it. I just couldn't do it. :)

My husband did the Goofy Challenge at Disney World with no training whatsoever. That's doing the half-marathon on Saturday, and then the full one on Sunday. He was very, very sore for a long time after that, but he did it! As for me, I can hardly even run to my mailbox without feeling like I'm going to pass out.