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 ...

When talking specifics, stretching terminology can get confusing. “Passive” and “static” generally refer to the same old-school method of relaxing into a stretch and holding it for 30 to 60 seconds.

There are tons of different stretching exercises—you can stretch the whole body, or just focus on specific areas like the legs or hips. There are also static and dynamic stretches. The choice between ...