Wow, that looks like back-breaking work. I find it challenging just to bend over to tie my shoes. It would be like tying your shoes, standing up, taking one step, then untying your shoes, then taking another step and tying your shoes again. I actually tried it for a while… I had a guy show me how to do it. One of the strangest things that I guess I didn't realize is that you are barefooted the whole time. It's really gooey in there… but it was nice to experience something so foreign to me but what millions of people do!