Extended Side-Angle Pose is a study of strength and softness. And the most important muscle for proper alignment? The psoas.

You don’t need to be an athlete to develop muscle imbalances. From the way you sit to how you carry your bag, ...

Editor’s note: Dana Santas, known as the “Mobility Maker,” is a certified strength and conditioning specialist and mind-body coach in professional sports, and is the author of the book “Practical ...

The obliques are the muscles running down either side of the abdomen. Pain in these muscles often occurs due to a type of injury known as “side strain.” There are two sets of oblique muscles: external ...

What Is the Body’s Core? Your body’s core is the term used for the group of muscles within your midsection that stabilize your spine and pelvis. Several muscles and groups of muscles make up the core ...