Many people feel that the psoas is the body’s most important muscle. It has more nerve endings than the palm of your hand and that shows how important it is. It is the only muscle to pass from the upper body through the midsection to your lower leg.
It plays a significant role in the efficacy of spinal function. The spine protects the spinal cord (the main component of the nervous system) and holds us upright. Psoas helps keep the spine in a healthy position and facilitates movement.
The 4 muscles connecting the arms and legs to the spine are the latissimus dorsi, a large broad muscle of the upper back connects the arms to the spine. The gluteus maximus, the piriformis (buttock muscles) and the psoas connect the legs to the spine.
Then there is also the fact that 3 Chakras are involved with the Psoas but that’s ‘woo-woo’ stuff and a whole other ball game!
I feel that the psoas is the most essential muscle in the body for three particular reasons:
1. The psoas holds us upright.
Human beings are usual creatures as they can stand upright. We can do this because of the curve in our lumbar (lower back) spine. This curve of the lumbar spine bears and transfers the weight of the spine and the head.
When we stand on two legs and the spine is vertical, the Psoas crosses the rim of the pelvis and pulls the lumbar vertebrae forward and down, creating the all-important curve.
2. The psoas is the walking muscle.
The Psoas muscles initiates every step we take when walking. When one leg is forward and the body moves correctly, the brain triggers the psoas to move the back leg forward to alternate with the front. There are many other muscles involved with walking but good walking and running patterns always begin with the psoas.
3. The psoas helps us react to traumatic situations.
When the body reacts to danger, our fight or flight response kicks in and this always involves the psoas. It maybe that we retreat to the foetal position or break into a run, the psoas is part of these traumatic reactions. There are in fact not many movements we make in life or during exercise that doesn’t involve the psoas muscle.