Imagine your brain is a computer that runs software programs and your muscles are hardware. The software (your brain) tells your hardware (your muscles) when and how much to contract in order to lift an arm, do a push up, go up a flight of stairs, run, etc.
If the software runs correctly, your brain fires the right muscles with the right amount of contraction at the right time so that your body moves easily and without pain or stiffness. When the software works well, no part of the hardware is overstressed. Moving your body feels easy because the joints are in their strongest positions.
But imagine if the software has a bug.
The brain isn't sending the right signals at the right time. Muscles are being fired at the wrong time or with too strong or too weak of a contraction.
The coordination of the muscles is off, and when that happens, a ripple effect occurs. Muscles are attached to tendon which are attached to bone. If the muscles aren't firing the right way, tendons can be stressed beyond what they can handle. Bone can be pulled or pushed around inside of a joint resulting in degenerative damage (the knee, hip, and shoulder are common examples).
The key here is that although your muscles and joints suffer for it, THEY ARE NOT THE CAUSE OF THE PROBLEM. The hardware isn’t to blame — it’s the SOFTWARE (your brain).
The real problem is the software and how your brain organizes and fires the muscles. The real problem is the PATTERNS that your brain executes when you move.
To fix the problem, you need to change your movement patterns.
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