A pilot is someone who is in the aviation industry, and who is able to operate aircraft in order to transport passengers or goods from one location to another. They are employed by commercial airlines, corporations, or governments.
Contraction of these deep core muscles provides segmental stabilisation of the spine. The outer unit consists of many muscles such as the Obliquus externus, Obliquus internus, Erector spinae, Latissimus dorsi, Gluteus muscles, the Quadratus lumborum, adductors and hamstrings.
In layman's terms the core consists of everything from your upper abs right above the rib cage to right below the gluteus to include the fron and back of the body. A core exercise is an exercise that targets any one of the 29 muscles found in the core. The core is made up of two systems: stabilization and movement. When performing core exercises you want to stabilize before attempting movement.