If you’re like many runners, stretching is your first course of action when you feel pain. Sore Achilles tendon? Stretch the calf. Sore knee? Stretch the quads or the IT band.
The problem is, tight muscles are rarely the root cause of pain, so stretching rarely solves the problem. A better solution for chronic, training-related pains and injuries—one with more evidence behind it—is strength training.