The hip flexor exercises rounded up here are the ones physical ... If you ignore the tightness, those hip flexors can lead to increased strain on the knee, specifically the knee cap.

This could be a sign of injury (or pending injury), which ... the researchers suggested runners should implement hip flexor-strengthening exercises into their programs to improve that strength ...

The hip flexor exercises rounded up here are the ones physical ... If you ignore the tightness, those hip flexors can lead to increased strain on the knee, specifically the knee cap.