It’s important to realize that “core” and “abs” are not one in the same. The abdominal wall—and its many parts—is only one piece of the core puzzle. Simply put, the core is made up of what we call the inner unit—our deep skeletal muscles that generally work involuntarily in a stabilizing role (for example, internal obliques, transversus abdominus and quadratus lumborum)—and the external spinal flexors (that is rectus abdominus, also known as the “six-pack” muscles and external obliques). Each muscle has a specific job, but they all perform synergistically to achieve the same goal: efficient stabilization of the spine as we move without pain.
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