What Is the Psoas Muscle? The psoas (pronounced so-ezz) muscles are two large muscles in your lower back. You have one on either side of your spine. They're the main muscular connection between your ...

Full-body stretching is a great way to become more flexible, increase mobility, and decrease pain. While there are a variety of moves that can help address certain issues (like lower back pain), a ...

4 Centre for Magnetic Resonance, University of Queensland, Brisbane, Queensland, Australia 5 School of IT and Electrical Engineering, University of Queensland, Brisbane, Queensland, Australia ...

For many runners, tight or achy hip flexors pop up at some point during training. But you shouldn’t just ignore them, as it’s often a sign your muscles need some TLC. Your iliopsoas is one of the ...

When elite ultrarunner Mike Wolfe laced up for a tempo run in June 2009, his right hip flexor felt tender and sore. But nothing out of the ordinary for a runner who, in a weekend, can cover 75 miles ...

I'm sure you've been told that your depression, your fear, and your anxiety is all in your head. Actually, it may all be in your ass. That's thanks to the psoas major muscle, sometimes called the ...