Why Do Runners Get Black Toenails? Cause, Injury, & Prevention.
A black toenail, scientifically known as a subungual hematoma, is both an annoyance for runners and a rite of passage. Getting a black toenail means that, as a runner, you’ve brought your training to a whole new level, but it also means that you have to deal with a somewhat disturbing sight on your feet … Read more