Rib Flare and Thoracic Breathing: How Upper Rib Cage Stiffness Inhibits Deep Core Contraction
The Short Answer An outward-flaring lower rib cage or stiff upper back can make it significantly harder to engage your deep core muscles—such as the transverse abdominis and pelvic floor. While rib flare does not permanently “block” or “paralyze” your core, it disrupts the mechanical alignment between your main breathing muscle (the diaphragm) and your … Read more