Old Protective Programs and Modern Performance – How the Nervous System Holds Us Back

An archaic control system regulates our biomechanics. The nervous system prioritizes safety over performance. The temporomandibular joint is primarily innervated by the trigeminal nerve, which transmits information about tension, position, and pressure directly to the brainstem, where subcortical reflex centers govern protective responses. Tension in the jaw spreads to the neck, shoulder girdle, trunk, and pelvis. The nervous system interprets this tension as a potential threat to the skull or cervical spine and reflexively restricts the functional range of large muscle chains. The so-called arthrokinematic reflex chain globally downregulates motor units.

In atavistic terms, an unprotected jaw once posed a risk of existential injury. The nervous system operates globally. The handbrake is in the brain.

The solution lies in freeing the jaw on a sensory level. Even gentle mobilization can alter the incoming data processed in the brainstem.

Evolutionary remnants no longer have to be limiting factors. With targeted sensory input, the boundaries of one’s performance capacity can be redefined.

The Torsion High – Where Biomechanics Meets Neurophysiology

In the world of functional movement, there are moments when technique and body awareness merge to create a unique sensation—the torsion high. This phenomenon occurs especially during single-leg weightlifting, when the other leg is bound and acts as an unusual counterbalance. What appears to be a simple exercise is, in reality, a highly complex biomechanical and neurophysiological process.

The Biomechanical Foundation

By binding one leg, the pelvis is forced to stabilize in all three dimensions. The elevated leg acts like a rudder or antenna, absorbing rotational forces from the spine. Every movement generates a diagonal force transmission through the sacroiliac joint—a chain reaction that extends deep into the muscles and fascia of the trunk. Only when these forces flow in a synchronized and controlled manner does a sense of structural integrity emerge, placing the body in a state of harmonious stability.

Neurophysiological Amplification

Biomechanical precision alone does not fully explain the torsion high. Mechanoreceptors in the thoracolumbar fascia—the body’s central force distributor—send signals to the brain under optimal loading conditions. This activation stimulates the release of endocannabinoids, directly engaging the brain’s reward system. At the same time, deep rotator muscles activate evolutionarily ancient muscular layers closely linked to sensations of flow and physical pleasure. The result is a movement that feels less like effort and more like an energetic release of tension.

The Symbiosis of Movement and Euphoria

The torsion high is the neurophysiological reward for perfectly executed movement. The interplay of biomechanical control and neural reward creates a state of lightness, stability, and euphoria.