The back consists of large, complex muscles that support your trunk and spine. There are many types of back muscles, and they are all essential, helping you walk, bend, twist, and hold your body ...

Below the end of the spine near the pelvic bones are the deep gluteal muscles. These are all associated with the thigh, whether rotating it, pulling it away from the body, or stabilizing the hip joint ...

Tight hip flexors, especially a deep muscle called the psoas, can silently stress your spine. Here's why this muscle deserves more attention—and how to strengthen it. Lower back pain is often blamed ...