What Your Eyes, Tongue, and Balance Have in Common…

Close your eyes. Move your tongue. Blink. Straighten your head. You just activated several cranial nerves. And unknowingly, you just activated the circuits of your motor control.

These 12 pathways are not a mystery: they are the conductive wires between your nervous system and your body mechanics. Understanding them means learning to read the language of the brain in motion.

12 pairs of nerves, 12 concrete motor levers

Each of them is an access point to performance, posture, and recovery:

• The trigeminal nerve (V): influences the proprioception of the skull and jaw (thus cervical position and line of gravity).
• The oculomotor nerve (III): adjusts the eye muscles (thus the precision of gaze, and by extension, postural stability).
• The vestibulocochlear nerve (VIII): manages balance (whenever it is disturbed, the tone of the extensors changes).
• The vagus nerve (X): modulates your autonomic system (breathing, recovery, digestion, stress).

When one of them is not functioning properly, the body compensates. When they work together, mechanics become fluid. In short, when these loops communicate effectively, the body becomes more stable, precise, and efficient.

Field link: what you observe every day

• The athlete who loses their grounding at the end of a squat, even though the strength is there.
• The player who “sees blurry” during a quick change of direction.
• The crossfitter who holds their breath poorly under effort and saturates faster.

Often, it is not a lack of will or technique, but an imperfect dialogue between sensory receptors and motor command. Reintroducing sensory clarity gives the nervous system a more stable foundation for performance.

What research says

• Coubard (Frontiers, 2015): about 60% of brain activity is mobilized by vision and eye-head-body coordination.
• Leigh & Zee: ocular and vestibulospinal reflexes work together to maintain stability during movement.
• Carrick: cranial nerves represent the most direct pathway to influence motor organization.

In other words, before trying to “push harder,” ensure that the system guiding the force is well calibrated.

What this changes in your practice

By understanding the role of these pathways:

• You analyze the quality of coordination, not just the result.
• You choose exercises that stimulate perception and reflex stability.
• You help your athlete learn faster, adjust more naturally.

RNP work is not therapy. It’s a motor learning accelerator. A way to sharpen the reflex foundations that support every athletic gesture.

To listen to the approach “from the inside”

In this podcast episode, Romain Katchavenda, co-founder of LabO-RNP, shares how the team developed this approach by combining neuroscience, fieldwork, and movement pedagogy.

He explains why training the nervous system has become essential to go beyond mere muscular or energetic work.

To remember

• Movement does not start from the muscle. It starts from the message.
• And these 12 nerves are the pathways through which this message circulates.
• When you know how to observe and train them, you’re not optimizing an exercise; you’re optimizing the system that makes it possible.