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 ...

You can strengthen your back with exercises, including bent-over rows, pullups, back extensions, and more. These different exercises target and strengthen different muscles in the back. If you’ve ever ...

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 ...