Many people turn to running as a way to get in shape, take care of their body, and look better. What a lot of people may not realize, however, is that an intense running regime can lead to something called “runner’s face.” Learn what this phenomenon is and how to treat and avoid developing this less than ideal condition.

Runner’s face refers to the distinct facial appearance some long-time runners develop over time. It typically includes saggy, lean, and tired-looking skin that often appears leathery due to sun exposure. While running has numerous benefits for physical health, the toll it can take on your skin is something to be mindful of, especially for distance runners who spend a lot of time outdoors.

So, What Exactly Causes Runner’s Face?

Runner’s face is pretty common in long-distance runners, and it happens for a couple of reasons. First off, when you lose fat from running, it can also impact your face, leaving it looking hollow and lean, which makes the skin sag and look a bit tired. Then there’s sun exposure—if you’re spending hours outdoors without proper sun protection, those UV rays start breaking down collagen and elastin, which are the building blocks of youthful, firm skin. That’s what leads to a loss of elasticity, rough texture, and that leathery appearance.