Had a split heel yesterday, and I actually gave myself a day off to take care of it, but this morning I decided that walking on it wasn't going to make it any worse, so I did my 2.5 miles. Hate taking a break!! It was the first one since I started this a month or so ago, and I exercise every day. Still felt like I was cheating myself. But now I'm back in harness. I figure that if I'm backpacking and my heel splits, I don't have the option of giving myself a long break, so why do it now? Soaking the feet and rubbing them with Vaseline takes care of the splits in a few days, but I'll keep walking.