How to Prevent Black Toenails in Marathon Runners
If you’re a marathon runner, you know the grind: early mornings, long miles, and pushing through fatigue. But one often-overlooked consequence of all that training? Black toenails—a common yet preventable condition known medically as subungual hematoma. It happens when blood pools under the toenail due to repeated trauma from your toe slamming into the front…
