See my previous comment (http://news.ycombinator.com/item?id=1799531 http://news.ycombinator.com/item?id=1799531) about hookworm elsewhere in the thread. I'm n

See my previous comment (http://news.ycombinator.com/item?id=1799531 http://news.ycombinator.com/item?id=1799531) about hookworm elsewhere in the thread. I'm not a runner, but I'm an avid cyclist, and given how much broken glass (and metal shards, etc.) I've pulled out of my tires over the years, it gives me pause. Plus, I live in Michigan - it gets COLD here.