Upper Body Mechanics

Don't Fire a Cannon From a Canoe.

The shoulder is the most mobile joint in the body, but mobility without stability equals injury. Your arm (the cannon) needs a stable shoulder blade (the canoe) to function pain-free.

The 3 Laws of Shoulder Health

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    Space is Limited: Poor posture reduces the space under the acromion bone, pinching the tendons (Impingement).

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    Ratio Matters: Most people have strong "Mirror Muscles" (Chest) but weak stabilizers (Rear Delt/Cuff).

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    Solution: For every pushing exercise, do two pulling exercises.

The Shoulder Complex

It's not just one joint. It's a synchronized dance between four joints and over a dozen muscles.

The Scapula (Blade)

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The Foundation

Rotator Cuff

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The Dynamic Stabilizers

GH Joint (The Ball)

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The Mobile Mover

Visualizing Imbalance

Why do shoulders hurt? Often because the "Internal Rotators" (Pecs/Lats) overpower the "External Rotators" (Cuff), pulling the joint forward.

The Modern Imbalance

Muscle Dominance

Relative strength of internal rotators (posture ruiners) vs. external rotators (posture fixers).

The "Painful Arc"

Impingement Zone

Pain probability peaks at 90° elevation where the tendon is pinched against the bone.

Stability Protocols

Select a focus: Stabilize the blade or Strengthen the cuff.

Build Your Bulletproof Routine

A healthy shoulder needs daily "tuning." Add exercises to create a pre-workout warm-up or a daily desk-break routine.

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📝 My Shoulder Plan

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Click the "+" on protocol cards above.