Stuart McGill

“previously noted, repeated spine bending will eventually lead to delaminations in the layers of the discs. It is important to note that the muscles play a protective role. They are arranged around the spine and designed primarily to stop spinal motion. Torso muscles that are flaccid and weak, or out of balance with one another, allow back problems. Consider the abdominal wall in front of the torso and its relationship to the spinal column. The rectus abdominis is the frontal abdominal wall muscle and is commonly known as the “six-pack”.”
― Stuart McGill, Back Mechanic