My first time!! The flooding here in Chicago brought a lot of sand onto the path. I was cruising along at close to 20 mph, and lost traction over a big wad of wet sand. Of course I went down on the drive side I think I messed up my bike pretty good! As for me, I have a huuuge rash on my heine, and several in other areas. Looks like I'll be taking a little time off!