Because the psoas traverses most of the joints of the core, it has a profound ability to deform the skeleton, which in turn impacts the force-generating potential of any muscle attached to the pelvis, spinal column, or ribcage. The shortening of the psoas can result in some or all of the following: Osteoporosis, adrenal fatigue, Pelvic Floor Disorder, shortness of breath, back pain, neck pain, tension headaches, and high blood pressure.

You can't strengthen the core without addressing the reason for the underlying weakness--an unyielding psoas. Learn to release this area of tension and increase psoas extensibility. Added bonus: an aligned core is a self-toning system!