About BTL Industries. Founded in 1993, BTL Industries is a privately owned developer and manufacturer of medical and aesthetic equipment. BTL currently has over 900 employees and direct offices in more than 51 countries. BTL Aesthetics, a division of BTL, has revolutionized the way to non-invasively remove adipose tissue; it currently ranks 2nd among the non-invasive body shaping and tightening manufacturers globally.
A Well-Defined Chest Routine. 1  1. Do exercises that work the whole chest such as pushups, barbell bench presses, dumbbell bench presses, dumbbell flyes and cable flyes. Perform these exercises to trigger muscle fibers throughout your pectoral muscles and get an all-around stronger, more defined chest.
In addition to moving the arm and pectoral girdle, muscles of the chest and upper back work together as a group to support the vital process of breathing. The diaphragm is a strong, thin, dome-shaped muscle that spans the entire inferior border of the rib cage, separating the thoracic cavity from the abdominal cavity.hese important muscles control many motions that involve moving the arms and head â such as throwing a ball, looking up at the sky, and raising your hand. Breathing, a vital body function, is also controlled by the muscles connected to the ribs of the chest and upper back....