Changes

** I noticed that many of the runners with blistered feet were wearing Drymax socks. This could be because most runners were wearing Drymax socks and therefore I saw them more commonly, or because runners who are susceptible to blisters are more likely to wear Drymax, or because Drymax socks were not working well at Umstead.

* '''Nausea'''. Not only is nausea horribly unpleasant, it also prevents correct hydration and fueling. This seemed to be another remarkably common problem, and once nausea sets in, it seems hard to overcome.

** Getting the runner (or the pacer if available) to carry a couple of cookies and/or crackers with them out of the aid station for later consumption if they appealed also seemed to work in a number of cases.

** Most of the nauseated runners I talked to used electrolyte capsules, but it is possible that this just reflects the overall percentage of runners using them. However, I suspect that taking the electrolyte capsules without sufficient water could easily cause a concentration of salt in the stomach that would trigger nausea. I'm also concerned that in under some conditions, the electrolyte capsules will not dissolve quickly. I've heard of runners who have vomited and found undigested capsules, indicating this is not just a theoretical issue.