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Pectoralis Minor

Anchoring the front of the shoulder blade against upward pulling
Published: 2012 07 18
Updated: 2021 01 30
Pectoralis Minor and latissimus dorsai side view. Neil Keleher. Sensational Yoga Poses.

For the longest time I didn't pay pectoralis minor much heed, focusing insted on learning to feel and control serratus anterior since I felt it was of prime importance in stabilizing the scapula (shoulder blade.)

However, being as I walk around with a back pack quite frequently, and I ride a motorcycle, both activities which tend to encourage a "shoulders forwards" posture, I finally figured out that perhaps I'd better learn a bit more about the pectoralis minor.

Shoulderblade Anatomy

The pectoralis minor attaches to a finger of bone near the top of the shoulderblade. If you feel the top of the opposite shoulder with one hand you'll notice a bony point at the top of the shoulder. That's the acromion process, the point to which the collar bone attaches to the shoulderblade. The coracoid process (coracoid means "crow") sticks out just undereath. The biceps long head attaches to it as well as the coracobrachialis muscle. And the pectoralis minor attaches there also.

How Pec Minor Moves the The Shoulderblade

From the coracoid process the pec minor reaches downwards, forwards and inwards to attach to the 3rd, 4th and 5th ribs. (Ribs are numbered downwards from top to bottom with the top rib being number 1 and the lowest rib numbered 12.)

Pectoralis minor lies beneath pectoralis major (the "pecs").

When activated, it pulls the top of the scapula forward, inwards and down, as if to flip the shoulderblade over the ribcage.

If you are used to wearing a back pack it might be this muscle that you are using to push forwards against the straps of your back pack.


Working in combination with serratus anterior, pec minor can be used to protract the shoulderblade, meaning it helps to pull the shoulder blade outwards, away from the spine, and around the sides of the ricage towards the front.

Downward Rotation

Working with levator scapulae and rhomboids, it can be used to downward rotate the scapula. In this case the inner border of the shoulder blade moves upwards while the outer edge (including the shoulder socket) moves downwards.


Working with the lower trapezius, it can be used to depress the scapula.

Shoulderblade "Flipping"

As mentioned, it can be used to "flip" the shoulder blade over the shoulder.

Yoga Poses and Actions

One of the places this action can also be useful is in the Prasarita Padotanasana c arm position. Doing this while upright it can be used to lift the arms extra high. When bend forwards you might be able to used this action to help get your hands to the floor. At the very least you can use it to help increase the angle between your back and your arms.

pectoralis minor: shoulder exercises using pectoralis minor to help arms behind the back prasarrita padottanasana c arm position, yoga poses
shoulder exercises, using pectoralis minor to get into hands behind back prasaritta C arm position

It may be even more helpful when you do this position with arms internally rotated and palms facing outwards.

It can also be useful when trying to getting the hands into the prayer behind the back position used in parsvottanasana.

shoulder execises, using pectoralis minor to get into reverse prayer behind back hand position
shoulder execises, using pectoralis minor to get into reverse prayer behind back hand position

Flipping can be very useful in binding yoga poses like Ardha Matsendrasana and Armpit pose when clasping the hands behind the back. For the binding arm (the left arm in both pictures below), use pec minor to help rotate the arm inwards.

shoulder exercises, ardha matsyendrasana
shoulder exercises, ardha matsyendrasana
cow face yoga pose, seated yoga poses, back view, feet close

And it can be useful in Cow Face pose, particular for setting up the lower arm.

Activating Pectoralis Minor

To deliberately activate this muscle first lift and open your chest. Then, focusing on the bony peak of the shoulder. Draw this point downwards and inwards towards the middle of your chest. You can rotate your upper arm inwards and reach it backwards, outwards and upwards at the same time. Your pectoralis major will probably also activate but that's fine.

And after trying this action with chest lifted, try it again with your upper back bend forwards. Try contracting your abs.

The feeling is like you are pulling the peak of your shoulder forwards, downwards and inwards towards the bottom of your sternum. Try to activate as you inhale and then relax while exhaling.

shoulder execises for activating pectoralis minor
shoulder execises for activating pectoralis minor

Once you have a feel for activating the muscle, try to activate it while doing the prasaritta padotanasana c arm position and then while trying to get into the prayer behind the back position.

(You can always hold on to a towel if you can't clasp your hands behind your back.)

shoulder exercises to help arms behind the back prasarrita padottanasana c arm position, yoga poses
shoulder execises, using pectoralis minor to get into reverse prayer behind back hand position

And experiment with its use to see if it helps (or hinders) binding in ardha matsyandrasana.

Stretching Pectoralis Minor

To stretch pec minor I like to reach the arms out to the sides, spread the shoulder blades and then externall rotate the forearms and upper arms while at the same time moving the top of the shoulders back.

You can also try the same thing with the arms angled downwards at about 45 degrees and slightly back. Make sure that you open your chest at the same time.

stretching the pectoralis minor in easy table top position.
stretching the pectoralis minor in easy table top position.

Another good stretching position is table top pose. Instead of using the shoulders to push your ribcage up, or as well as using this post to push your ribcage up, also let your ribcage hang from your shoulders.

Try moving your shoulders back and forwards slightly to vary the stretch.Try it with hips down first. Then try it with the hips lifted.


<#alt#> Neil Keleher, Sensational Yoga Poses.

8 book Ebook bundle, $48.00.
Dance of shiva for coordination and mental flexibility, balance basics for understanding balance, yoga basics 1 and 2 for getting a feel for your body, hip control guide and yoga for your shoulders for learning your hips and shoulders, wheel pose for tips on learning difficult poses and know to flow to learn how you can use flow and it's opposite state for enjoyable learning.

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