Know Your Muscles - The Upper Body - Intel by Lydia

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This intel was added by Lydia

Lydia

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Know Your Muscles - The Upper Body Becoming familiar with the muscles that make up your body has more benefits than simply allowing you to talk shop with your training partners. The more familiar you are with the muscles you're working, the better you'll be able to judge what's needed to make improvements. In this article we'll get to know the muscles that make up the chest and upper back. Although they are two distinct areas, the chest and the upper back will be considered together because achieving a muscular balance between them is crucial, particularly in relation to maintaining good posture. Creating an imbalance between the two is likely to result in injury. The main muscles found in the chest and upper back are as follows: 1. Pectoralis major - these are the large chest muscles found to either side of the breastbone. Its main job is to bring the upper arm inwards across the body, a movement that is known as horizontal adduction. 2. Latissimus dorsi - this is the largest back muscle that runs from the lower back to the upper arm bone. It pulls the upper arm towards the body and acts as an internal rotator of the upper arm. 3. Trapezius - this muscle runs from the mid spine to the shoulder and then to the neck. Its main role is to faciltiate movement of the shoulder blades.