FemboyMaxxer
Solipsism is MY mommy
- Joined
- Aug 1, 2026
- Messages
- 372
- Online time
- 1d 11h
- Reputation
- 481
Most lifters complain about having a narrow chest or flat arms even after years of heavy benching and curling brah they think they just have bad muscle insertions but they are complete retards (no offense) and ignore the coracobrachialis which is a deep elongated muscle running along the inner upper arm almost no one trains this muscle directly because gym bros don't even know it exists but it is the ultimate game changer for your physique because when it hypertrophies it literally pushes the biceps and triceps outward while filling the hollow gap between your armpit and your pec making your upper body look incredibly dense thick and wide from the front view bhai
The Anatomic Illusion Of The Deep Inner Arm
The coracobrachialis originates at the coracoid process of the scapula and inserts right into the middle of the humerus bone when this muscle is completely flat and untrained u get that awkward empty space between your arm and your chest which makes your arms look small from the front even if they look decent from the side isolating this specific muscle is the only way to physically pack mass inside the armpit zone to create a seamless wall of muscle across your upper torso
The science of true coracobrachialis biomechanics
Standard bicep curls and chest flies do not grow this muscle because the coracobrachialis does not flex the elbow joint and it doesn't do pure horizontal adduction ik it sounds complex but its primary anatomical functions are flexion and adduction of the humerus at the shoulder joint specifically when the arm is already externally rotated to isolate it completely u must eliminate the biceps and pectorals by using a short lever arm vector that forces this deep inner muscle to take 100% of the mechanical load bhai
the cables and bench mechanical setup
To execute this movement properly u need a single cable pulley set at exactly belly button height and a flat bench positioned about two feet away from the cable machine stand facing away from the pulley and grab the single D handle with your target arm keeping your shoulder completely packed down and your elbow bent at a fixed ninety degree angle throughout the entire movement brah
step 1: the external rotation cable sweep
With your elbow locked at ninety degrees and pinned close to your hip rotate your forearm completely outward to the side to stretch the inner arm tissue then use your coracobrachialis to sweep your entire upper arm forward and inward across your upper abdomen toward your belly button do not flex your elbow at all as u pull the cable across your body and squeeze the deep tissue inside your armpit for two seconds at the peak contraction phase
Step 2: The Incline Dumbbell High Anchor Fly
Lie down sideways on an incline bench set to forty five degrees holding a light dumbbell in your top hand with your arm extended straight up toward the ceiling lower the weight directly down behind your head in a strict overhead arc keeping your palm facing upward to put the coracobrachialis into an extreme deep stretch at the bottom then pull the weight back up using only the inner arm joint structure to force muscle hypertrophy bhai
Step 3: The Isometric Front Bicep Isometric Press
Stand in front of a solid wall or power rack post and bring your arm up into a front double biceps pose press the inside of your upper arm and elbow hard against the flat surface of the post as if u are trying to crush it into your chest maintain this maximum isometric contraction for thirty seconds straight to trigger deep motor unit recruitment in the hidden fibers that standard gym exercises never touch
Because this muscle has never experienced direct tension before u will get a massive deep tissue pump inside your armpit within the very first workout brah by week three the hollow gap between your chest and your arm will start to fill out permanently widening your upper silhouette and by day sixty your front double biceps pose will look completely different because the hypertrophied coracobrachialis will physically lift and project your entire arm mass outward
@Pentatonic
The Anatomic Illusion Of The Deep Inner Arm
The coracobrachialis originates at the coracoid process of the scapula and inserts right into the middle of the humerus bone when this muscle is completely flat and untrained u get that awkward empty space between your arm and your chest which makes your arms look small from the front even if they look decent from the side isolating this specific muscle is the only way to physically pack mass inside the armpit zone to create a seamless wall of muscle across your upper torso
The science of true coracobrachialis biomechanics
Standard bicep curls and chest flies do not grow this muscle because the coracobrachialis does not flex the elbow joint and it doesn't do pure horizontal adduction ik it sounds complex but its primary anatomical functions are flexion and adduction of the humerus at the shoulder joint specifically when the arm is already externally rotated to isolate it completely u must eliminate the biceps and pectorals by using a short lever arm vector that forces this deep inner muscle to take 100% of the mechanical load bhai
the cables and bench mechanical setup
To execute this movement properly u need a single cable pulley set at exactly belly button height and a flat bench positioned about two feet away from the cable machine stand facing away from the pulley and grab the single D handle with your target arm keeping your shoulder completely packed down and your elbow bent at a fixed ninety degree angle throughout the entire movement brah
step 1: the external rotation cable sweep
With your elbow locked at ninety degrees and pinned close to your hip rotate your forearm completely outward to the side to stretch the inner arm tissue then use your coracobrachialis to sweep your entire upper arm forward and inward across your upper abdomen toward your belly button do not flex your elbow at all as u pull the cable across your body and squeeze the deep tissue inside your armpit for two seconds at the peak contraction phase
Step 2: The Incline Dumbbell High Anchor Fly
Lie down sideways on an incline bench set to forty five degrees holding a light dumbbell in your top hand with your arm extended straight up toward the ceiling lower the weight directly down behind your head in a strict overhead arc keeping your palm facing upward to put the coracobrachialis into an extreme deep stretch at the bottom then pull the weight back up using only the inner arm joint structure to force muscle hypertrophy bhai
Step 3: The Isometric Front Bicep Isometric Press
Stand in front of a solid wall or power rack post and bring your arm up into a front double biceps pose press the inside of your upper arm and elbow hard against the flat surface of the post as if u are trying to crush it into your chest maintain this maximum isometric contraction for thirty seconds straight to trigger deep motor unit recruitment in the hidden fibers that standard gym exercises never touch
Because this muscle has never experienced direct tension before u will get a massive deep tissue pump inside your armpit within the very first workout brah by week three the hollow gap between your chest and your arm will start to fill out permanently widening your upper silhouette and by day sixty your front double biceps pose will look completely different because the hypertrophied coracobrachialis will physically lift and project your entire arm mass outward
@Pentatonic
