If you want your workouts to improve how you feel and move in everyday life, then you have to train your core. These mid-body ...

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 ...

You’ve probably seen it all over your feeds: Fitness pros and physical therapists talking about “training the deep core.” But unlike crunches or Russian twists, these exercises don’t come with a pump ...

Most people know where the abs are in the body—sometimes known as the six-pack muscles—but few are so familiar with the deep core. These are the deepest layer of abdominal muscles and are sometimes ...