The abdominal muscles are very important when it comes to being able to move the body. The abdominal muscles are made up of many diverse fiber attachments on the front sides bottom, and back of the trunk, the mid-section and all the way down to the pelvis. Not only do these muscles flex, extend, bend and rotate the torso, the abdominal muscles can help move the pelvis, thigh, spine, head, and neck. Therefor it is important that abs muscles are strong enough to support movement and stability in the body. The abdominal muscles also play a role in breathing.