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 ...

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LOWER BACK PAIN can be one of the most frustrating physical maladies you'll face, and it's likely that you will, at some point or another, experience the issue. Mayo Clinic statistics hold that around ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. It’s easy to almost ...

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 ...

Lower back pain is a common ailment affecting many Americans, often exacerbated by improper lifting techniques. Excess weight, especially in the midsection, increases strain on lower back muscles, ...

You might not think about your back muscles often, but they do a lot to support your upper body. A regular back-strengthening routine can ease fatigue and stiffness while also improving mobility. If ...