Do you spend a lot of time in your trail running shoes and suffer from outer knee pain as a result? If so, you might be blaming your IT band. As I recently wrote, however, you can finally stop rolling ...

The tensor fasciae latae—or TFL for short—is a small muscle on the outside of your hip, spanning an average of 6 inches in length. But when this area is tight, painful, or otherwise overworked, you ...