If you've ever run, jumped or been told you have good posture, you have your hip flexor muscles to thank. On the other end, muscle pain and immobility issues are also often connected to problems ...

Both Dr. Hasson and Dr. Fata-Chan offer lunges as an example of a classic stretch that targets the hip flexors directly.

If you have tight hips, you'll know. A nagging tension and stiffness causing serious discomfort and limited mobility, and perhaps even accompanied by lower-back pain and hamstring pain, tight and weak ...