Welcome to the Get Fit Guys quick and dirty tips to get moving and shape up. My name is Brock Armstrong, and I'm the Get Fit Guy.

A while ago, a listener named Jock wrote in and asked this. You know those pecks that go all the way to the

neck and look like two giant squares with nipples? Well, how do I get those?

Now, this is an interesting way of describing them, but not all that inaccurate when I think about it.

The muscles in the pectoral region do form a square or more of a rectangle on either side of your sternum

if you combine all four of them

equally. Now, the four muscles that we consider to be our pecks include the pectoralis major,

the pectoralis minor, the serratus anterior, and the subclavius. Now, let's look at each one of those

separately. The pectoralis major is a large and

fan-shaped muscle and is comprised of a sternal head and a clavicular head. It is also the muscle

that is closest to the skin, and it is used to adduct and medially rotate the upper arm. Now the pectoralis minor is just under the pectoralis

major and it forms part of the anterior wall of the axola region and it is mostly used to stabilize

your scapula by drawing it against your thoracic wall. Now it should be noted that even though the peck is divided into these two parts,

there are actually six separate sets of muscle fibers in the pectoralis muscle.

Now, this is important because these sets of fibers allow separate positions of the muscle to be moved independently by our nervous

system. And this is one of the reasons why our arms are so useful and powerful at many angles and

in many different positions. Now the next muscle is the serratus anterior and it originates at the first to eighth rib at either side of our chest,

and it inserts along the entire anterior length of the medial border of the scapula, and it is used

to rotate the scapula, which basically allows our arms to be raised over 90 degrees.

And the final muscle is the subclavius, and that one is a small muscle located directly

under the clavicle, running horizontally, and it's mostly used to anchor and depress the clavicle.

Okay, that's it for the anatomy lesson. Now, let's talk about

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