You’re in the restroom before a big job interview. You remember reading this blog and you decide to do Megaplank on the wall. You feel your serratus anterior responding, but you also begin to feel your anxiety decreasing and your sense of personal power on the rise. Read on to find your serratus anterior and feel like a superhero at your next job interview!

First, a little about me. At the age of 50, after about 22 years as an English professor, the constant keyboard work and talking on the telephone (remember those?) had just about wrecked the right side of my body. My right shoulder was frozen – or so I was told. I had alternating numbness and sharp shooting pains running down my arm. It was just about that time when I started yoga and began learning how to heal my body.

Around that time, I happened to meet an old-time baseball pitcher named Steve Rogers and I figured that nobody would know better than a baseball pitcher how to take care of a hurt shoulder. He looked down at me and with a soft, southern drawl, he said, “Sweetheart, you jus’ gotta rehab around that injury.” At that moment, I had no idea what he meant, but now, years later, my shoulder is strong, supple, and flexible and I learned a valuable lesson.

Get to know your serratus anterior to keep your scapula in place.

Get to know your serratus anterior to keep your scapula in place.

The key muscle that helped me to heal my shoulder – the serratus anterior – isn’t technically a shoulder muscle. But as I became aware of the role of this important, but under-appreciated muscle, I learned an important lesson of body mechanics. That is, when one muscle or set of muscles are injured or weak or overstretched they will recruit help from surrounding muscles and that is often the source of pain. On the other hand, when we strengthen postural muscles, such as the serratus anterior, we provide support for those weak or overstretched or injured muscles. Strengthening my serratus anterior allowed my weak and injured shoulder muscles to heal while offering much-needed support.

The serratus anterior, as Biel’s Trail Guide to the Body attests, is always well-developed on superheroes. However, on the rest of us, this muscle can be hard to find. It is a flat, serrated, oblique muscle that begins from the superior border of the upper nine ribs and extends underneath the scapula.

The serratus anterior’s claim to fame is that it can abduct (or protract) the scapula, which means it can draw the scapula away from the midline of the body. The serratus anterior is partially covered by the breast. This muscle that has so much real estate from the scapula, around the sides of our ribs and even underneath our breasts that is becomes hugely important in stabilizing the upper core, whether you are throwing a punch or just pushing open a heavy revolving door.

First, let’s find this muscle. Extend your right arm in front of you at shoulder height and flex your elbow to 90 degrees. Press the right forearm and right palm into the wall as though you expect the wall to press back. As your right scapula protracts, you’ll feel an isometric meetup in which the serratus anterior turns on just a little and chirps “hello.” Do this again with the left hand and notice any difference between the sides of your body.

Come back Friday to learn more about activating and strengthening your serratus anterior (and possibly becoming a superhero)!

Enjoyed this article? Read Get Serratus About Your Pec Minor
AnnMerle Feldman

Hello, there! If you like my perspective on self care, please sign up for my weekly blog at When you sign up, you get a free e-manifesto that says who I am and what I stand for. I started yoga as a 50-year-old single mom: a stressed-out, sleep-deprived, achievement junky, suffering from constant pain and headaches. After that first eye-opening yoga class, I immersed myself in yoga, movement, and breath. I did all of Ana Forrest’s trainings, continued studying with Steve Emmerman and Talya Ring and now I’m completely thrilled with the Roll Model Method® and Yoga Tune Up® with Jill Miller and her mighty tribe of extraordinary teachers and trainers. Strength, breath, and mobility create a pain-free, vital body and this precious body is the starting point for the life you want to live. My classes and workshops help you to go inside; study your body and your breath; and learn that healing is within your grasp. I look forward to connecting with you!

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Nice personal testimony on the often ignored importance of the serratus anterior…and its location on our body!

Sara Dewhurst

Thanks for the info that strengthening the serratus anterior is key in having a healthy shoulder, and explaining that the source of our pain likely comes from overuse of the muscle due to compensating for overly weak , overly stretched, or injured muscles.

Rose Moro

I love that I found this muscle and now know how to activate it. Planks are life!!


I appreciated the article walking you through physically finding it on your own body. Helpful cues to know for students

Karen McGovern

Thanks so much for the very helpful information. I did not know the importance of this muscle. An externally vital muscle to stabilize the core. Can’t wait to do mega planks with my students.


Great article. Recently, I have been suffering from shoulder and neck pains, just one side as I always carry heavy loads on my right side. After reading this article, made me think about this muscle. And gave me idea and incentive explore this neglected muscle.


Thanks for your great article! It really makes sense to fire up the lazy muscle to help heal the over worked ones. I’ve been doing a lot of mega planks to get my serratus working. Superhero in the making!

Nancy Bernhard

Secret shortcut to being a superhero, thanks! I have a hard time propriocepting the scapula, so I’m hoping that spending some time getting to know the serratus will help me to isolate that protract and retract motion.


Great description -I’m looking forward to reading your next post on how to strengthen the serratus anterior

Myriam Goulet

So glad I found that muscle… think I finally got the answer for my shoulder problems.


This explanation of Mega Plank and Serratus Anterior is incredibly useful. It helped me and I know it will help my students!!! Thanks!


I had a teacher once tell me to think of my arms begining under my armpits instead of at the shoulder joint. She didn’t name the Serratus Anterior at the time and I think I probably would have forgotten it if she had since I had just begun yoga and general body awareness. We did a test to hold a yoga block with a straight arm out in front and notice where we were hold it from. Then we did a few “serratus squeezes” – not unsimilar to the action you described against the wall to locate this muscle –… Read more »

marie josée packwood

Liked “the find the muscle” very much!

Dawn Williams

Good intro to the serratus anterior muscle. I didn’t have a clue about this muscle until a few days ago. Also good emphasis on explaining that a weak area of muscles will steal from the stronger areas, which is how we become unbalanced and open for injury. I look forward to more from you and really celebrate someone taking charge of their health at age 50!


Such great detail on this superhero muscle! So important for core strength and shoulder stability. Thanks for sharing!


thanks for going into such great detail! I love learning about the muscles


Thank you so much for explaining the importance of the serratus anterior and pointing out to shift the focus on the surrounding muscles when working on healing an injury or weakness! I can attest that this is an often forgotten concept!!


this muscle has always been a favorite of my teacher – it is such a critical muscle for upper core stability for arms balances and inversions. thanks for the mega plank on the wall —

Bonnie Bloom

I had no idea that I had one of these until recently and I still didn’t get that it wrapped to the front under the pecs. I definitely want to be a super hero and I love feeling positive and strong so Serratus anterior is my new friend. the most important piece is that we have ways to access well being and strength that we were never taught about. this is exciting.


Thank you for your walk through of megaplank on the wall- its an accessible way to get people to discover their serratus anterior before taking it to the next level in their megaplank on the mat. Will remember this as I work on general shoulder stability, thanks!

Louise LeGouis

Discovered today with interest that there could be a cure to my chronic – computer lifestyle induced – protracted shoulders so this blog was timely to drive in some key concepts. Thanks for the post.

Katrina Sukola

This feels so good! Even after years of classical ballet training, I find myself with poor posture and a nagging shoulder injury. This mega plank at the wall instantaneously reminded me of my postural issues (and corrections needed) and relieved the nagging pain in my shoulder. I feel like a super hero!

Charlene Lowe

Thank you for explaining everything that the serrated anterior does. I knew it protracted the shoulders but was unaware of its ability to stabilize the upper core. This helps me to understand why it’s an important muscle used in jumping back and forward between downward facing dog and seated poses.


I love the idea of the serratus being connected to your power! From my perspective of Laban Movement analysis we have a quality of shape referring to Narrowing and Widening. When activating the serratus we feel a widening of the ribcage even after the exercise is over as the muscles takes up physical space! This could totally help me feel more powerful as my intimated, narrow self felt the widening and empowerment of my body in space. This comes back to body language as well! I am perceived more confident with a wider sense of self.

Elaine Jackson

Thank you for the great tip about how to “find” or feel the serratus anterior. I noticed the right side is much weaker than my left, and I had a “frozen shoulder” on that side. Now I’m thinking that perhaps I’ve found a contributing factor. So cool!

Yvonne Cone

I kept thinking of the Serratus as related to the shoulder (which it is) more than the obliques/core, but this just blew my mind that is considered more of an oblique muscle…which now makes sense as it’s on the right and left lateral body. Also, awesome activation exercise, totally did it while reading and just like Megaplanking on the floor, the wall was the same. Gotta love those Orientation exercises 😀

Steven Custodio

Thanks for the little anatomy read. The serratus anterior was also a life saver for my shoulder, for about a year was always complaining about a weird shoulder pain, went to see a physio, she said it was mainly because my shoulders were rounding forward. She gave me some exercises to follow but never said anything about that specific muscle, also did some massages but relief was temporary until I i found a video about the serratus anterior after doing the YTU science of rolling. Found a rolling routine specific for that muscle and within a few weeks, the pain… Read more »

Wendy Hensley

The more I learn about this muscle the more I want to know. I just finished YTU level 1 and learned more about SA and how to drag my arms toward my feet ( figuratively) while in plank to access it more fully.

Jasmine Ellemo

Great post. Everyone notices immediately when they ‘wake up’ their serratus anterior by engaging it in a plank, and the wall version is a great option for people who may lack strength to do the plank version.


Tanks you to remember me how the serratus anterior is an important muscle. He’s a superhero like you said. I’m a therapist and most of the time, the serratus anterior is in problem in the shoulder pain.


I am totally doing Megaplank next time I go into a big meeting 🙂 Look forward to your next post!


Great article about the serratus. I like how strengthening the SA can help people with winged scapulae. One of the best ways to fix winged shoulderblades is boxing! My son’s recently started with this hobby and I got a chance to pound his boxing bag for a good while. Talk about power! 🙂

Ted Burnham

Thank you for this post. I am a big fan of this one having had my share of shoulder injuries and somehow avoiding the knife. The Serratus has come to the rescue for me in the past and now with the Yoga Tune Up® Plank with Serratus which I just learned in the Yoga Tune Up® training I can keep them strong.

Karen Bulmer

This is great and so helpful! I teach movement to musicians and I notice that they tend to hang the weight of their arms and instruments off their torsos. I think that developing strength and awareness in the serratus anterior is big piece in developing an alternate more efficient and more supportive way to move. I might give them this post to read! Looking forward to checking out part 2.


Thanks Ann Marie, I just started my Yoga Tune Up training. Loving it and with this post my listening for the serratus anterior will be heightened!

Kevin Wood

I never knew this muscle existed! That little exercise you mentioned above already made me realize how weak and underdeveloped this muscle is on my own body.

Thank you 🙂

Tracey Silverman

Hi AnnMerle! I’m a fellow Forrest Yoga/Yoga Tune Up teacher. I really appreciate your illumination of the Serratus Anterior. I heard the word so many times during my teacher trainings but never knew where it was, what it did, and the “why” behind its importance. I’m so grateful for this anatomy-based, functional knowledge that helps provide the context and reasons why we want a responsive serratus, especially for the all the fun poses we experiment with in yoga asana. Thanks!


Thanks, AnnMarie, for post,
Never thought about Serratus Anterior as so important muscle. Going to do more researches and use it in my classes


hi AnnMerle! I love your post and love that it’s about the good ol’ serratus anterior because of our Turbodog connection. I love your cuing and excited to teach this! Aho!!

Natalie K.

I love that the serratus anterior is referred as the super hero muscle. It is often overlooked in a lot of shoulder pain. I’m happy you mentioned it’s stabilizing properties as well as it’s synergist actions! Thank you!

Marie-Pierre Gauthier

Article intéressant sur le lien entre le renforcissement du serratus anterior et la connection du haut du tronc !

Love Meditating

I see that I skipped some biology classes, as I didn’t know that it is one of the biggest human muscles and that it’s pretty important as well. Ehh… people learn the whole life 🙂


Thank you! I talk about the SA often, I will use this cue to help people locate and isolate!

Vanessa boivin

Awesome article! The serratus anterior is often underused. Great reminder to reinforce it!

Jessica Haims

Thank you for this insight AnnMerle!! Great article, can’t wait for the next one!

shari Williams

great blog! I encounter many people with shoulder issues. The eye opener for me was my student who recently heeled from rotator cuff surgery. I had her on the wall for “body surfing” and she got on the floor and did it! she was so excited. because it mostly targets the SA she felt successful 🙂

Cintia Hongay

Awesome article Annamerle! I will post it in my yoga Facebook page.
I’ll make sure to incorporate some planks at the wall from now on ???


Awesome can hardly wait for next week!