The arm-length test

This is not some esoteric fad but a neurological reflex, with the muscles relaxing on one side of the body, while they are contracting on the other. This is why the arms differ in length.

It is a response of our muscular system to stress. Here, the brain controls our muscles via a neuropeptide, the substance P, at the speed of 1,500 meters (about a mile) per second, in ways that make strong muscles suddenly become weak.

You can find videos that offer helpful hints and easy steps to support you in your practice. “Spherical vision” is key to getting objective answers.