Plantar fasciitis is an annoyingly common problem in runners. “In the general population, it can be as high as 10 percent of people [who] deal with it over the course of their life,” says Todd McGrath , M.D., primary sports medicine physician at Hospital for Special Surgery in New York City. But in runners, specifically, that number climbs to about 25 percent, he says, adding that there are some reports that middle-distance runners are more inclined than others to experience plantar fasciitis, but it’s unclear why that is. The good news is that most cases of plantar fasciitis get better, says McGrath. More specifically, he says that 80 percent of patients with plantar fasciitis will be better within a year. And, you can prevent plantar fasciitis with pretty much the same exercises you would do to treat it. So even if you’re perfectly healthy right now, it wouldn’t hurt to keep reading and add some of these strategies to your repertoire.…