You peel off your running sock and – alas! – there it is: your first bruised toenail. Many runners view bruised toenails as a rite of passage, but you are no less of a runner if you never get one. In ...

You peel off your running sock and – alas! – there it is: your first bruised toenail. Many runners view bruised toenails as a right of passage, but you are no less of a runner if you never get one. In ...

If you're a runner, you know that black toenails are common—but that doesn't mean you have to put up with them. Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a ...

"Tight shoes can compress your toes, forcing the flesh into the nail," says Jenny Salazar, a nail technician in New York City. Another culprit: Nails that are too short and curved in at the corners ...