Why Is One Side Of My Body Bigger Than The Other
The Neural Drive Problem Behind Muscle Asymmetry That Volume Cannot Fix
You have tried everything. Extra sets on the weak side. Unilateral work. Mind-muscle connection drills. And still, one lat is thicker, one glute is fuller, one shoulder caps more roundly. The asymmetry will not budge because this is not a training problem. It is a neural drive problem.
What Causes Muscle Asymmetry
Neural drive refers to the strength and quality of the signal your brain sends to a muscle. When neural drive is high, the muscle contracts fully and responds to training. When neural drive is low, the muscle contracts partially, fatigues quickly, and does not respond to volume the way you expect.
Neural Drive vs Training Volume
When your pelvis is rotated in the Left AIC pattern, your left glute has reduced neural drive. It does not matter how many single arm pulldowns you do with your left hand. If your brain is sending a 60 percent contraction signal, that muscle is receiving 60 percent of its potential stimulus regardless of the weight on the bar.
How Pelvic Rotation Creates Asymmetric Growth
The Left AIC pattern places each hip in a different position, each scapula on a differently oriented rib cage, and each shoulder in a different degree of rotation. Same exercise, same weight, fundamentally different stimulus to each side. Progressive overload on an asymmetrical foundation produces asymmetrical results. You are not undertraining the weak side. You are overtraining compensators while the target muscle remains neurologically inhibited.
Why Unilateral Training Does Not Fix It
More unilateral work loads the compensation pattern on the weak side. Your left quad, left hip flexor, and left lower back get better at producing force in the absence of the left glute. The exercise numbers improve. The asymmetry persists because the target muscle still has reduced neural drive.
How To Restore Symmetrical Neural Drive
After pelvic repositioning through PRI corrective work, people consistently report feeling muscles they have never felt before during training. The left glute during hip thrusts. The left lat during pulldowns. What is actually happening is the brain now sends a full contraction signal to a muscle it had been partially inhibiting. MOVECHECK identifies exactly where these neural drive deficits exist and prescribes the positional corrections that restore them.
See This In Your Own Body
Every concept in this article is tested in the MOVECHECK assessment. Find out which patterns apply to you.
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