The psoas muscle is very complex. It doesn’t work like a typical muscle. The psoas muscle attaches to multiple vertebrae in the lumbar spine. A typical muscle has a tendon on each end that connects it to a bone. The general psoas muscle is made up of a psoas major and a psoas minor. We have one of these on each side of our spine. At its highest point, the psoas muscle begins at the lumbar vertebrae. It runs downward through the area of the hip flexors. At its lowest point, the the psoas attaches to a tendon on the back side of our upper leg, which also adds to the complexity of it. The tendons of the psoas all connect in the posterior (back) side of the body. However, the psoas muscle uniquely travels through the anterior (front) side of the body.
How To Sit With Psoas Pain

When the psoas contracts, it allows us to rotate the hip externally. It also gives the ability to life your leg, as well as move it laterally. The psoas muscle is a major force that helps the spine and legs move together effectively. It’s a major force when it comes to any full body movement like running and squatting.
It also provides a large amount of stability that helps us keep our spine and torso upright. This is a crucial variable required to sit for long periods of time with good computer posture. The psoas muscle is one of the few muscle groups that connects our upper body to our lower body. Sitting can affect the psoas muscle because it is very prone to overuse. The average computer worker is at a desk 8 hours a day, 40 hours a week, 2000 hours a year. That’s a massive amount of repetitive strain, regardless if we are sitting with good or poor computer posture. When we sit for long periods of time, it can cause a tight psoas.
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