Each muscle in the deep, intermediate, and superficial layers come in pairs; there is one on the left and one on the right side of your body. The Superficial Layer The superficial layer of back ...

The muscles of the lower back help stabilize, rotate, flex, and extend the spinal column, which is a bony tower of 24 vertebrae that gives the body structure and houses the spinal cord.

5 Exercises To Strengthen Your Deep Spinal Stabilizer Muscles, the Secret To Improving Posture. Your erector spinae muscles are located deep in your back and help with spinal stability.