02/10/2026
Introducing the serratus anterior 👏
An underrated scapular stabilizer that kind of looks like a bunch of fingers on the ribcage. It attaches on the underside of the medial border of the scapula and spans to the lateral ribs as pictured.
For a muscle that is not well known to the public, it has some very important jobs:
⚪️shoulder protraction
⚪️scapular upward rotation
⚪️overall scapular stabilization
⚪️posterior ribcage expansion (during inhalation)
The serratus anterior should be highly active during overhead movements, pressing, and pulling. Stay tuned for exercises that strengthen this guy!