Yes, I agree...both serratus post. sup and post are VERY deep (right next to the rib cage) palpable, ESPECIALLY in people with chronic breathing issues as both are involved in forced ihalation (sup) and exhalation (inf). ย Try working on the rhomboids with someone in your class with say, chronic asthma, and have them forcefully breathe in and out and see if you can feel them. ย It takes a keen sense of touch, but you will definately feel something! ย Regards,Krystyne