I remember many years ago being on a flight to help Master H.C. Hwang teach in Mexico. Somewhere over the clouds, he shared something that stayed with me. He had been reading a scientific article describing the gut as a “second brain.” What struck me even more was how naturally he connected that idea to the traditional Korean concept of the Dan Jun—the energy center just below the navel that martial artists have focused on for centuries.

That moment sparked something in me. If this idea was being discussed in modern science, and it aligned so closely with what we had been taught in martial arts, I wanted to understand it more deeply. So I began researching.

What I found was fascinating.

Science now recognizes what is called the enteric nervous system—a complex network of over 100 million neurons embedded in the gut. To put that into perspective, that’s more neurons than are found in the human spinal cord. Even more interesting, when you compare it to animals, the human gut contains roughly 20% of the neuron count found in a dog’s cerebral cortex. While it doesn’t “think” in the way the brain does, this system is incredibly sophisticated. It regulates digestion, communicates with the brain through the vagus nerve, and plays a major role in how we experience instinct, emotion, and intuition.

In fact, a large portion of communication in the body actually travels from the gut to the brain—not the other way around.

This gives new meaning to the phrase we’ve all used: “I have a gut feeling.”

But the story doesn’t stop there.

The human brain is constantly being flooded with information from the environment. Some estimates suggest that our nervous system is taking in millions—if not billions—of bits of sensory data every second. Yet our conscious mind can only process a tiny fraction of that—often estimated at around 40–50 bits per second.

So what happens to the rest?

It doesn’t disappear.

It gets filtered.

If our brain attempted to consciously process every sound, every movement, every shift in light, temperature, smell, and spatial awareness—we would be completely overwhelmed. Instead, the brain filters out what it deems unnecessary and allows only certain information to rise into conscious awareness.

But here’s where it gets interesting.

Just because something is filtered out of conscious awareness does not mean it is ignored.

Your subconscious mind is still paying attention.

Subtle environmental cues are constantly being monitored in the background. A sudden lack of sound—no birds, no insects. Birds taking flight in the distance. A faint, unusual smell. A shift in temperature. A shadow moving slightly out of place. A subtle change in someone’s body language.

These are the kinds of things your conscious mind may not register in the moment… but your subconscious does.

And sometimes, it sends you a signal.

That signal is what we call intuition.

Or more commonly… a gut feeling.

It’s almost like having your own version of Spider-Man’s “spider-sense.” Something doesn’t feel right—but you can’t immediately explain why.

From a survival standpoint, this is incredibly important. In nature, a sudden silence among animals often indicates that a predator is nearby. Even if you don’t consciously notice the silence, your nervous system may register the change and create a subtle internal alert.

You feel it before you understand it.

Now let’s bring this back to martial arts.

In Tang Soo Do, we place great emphasis on awareness—of our stance, posture, breathing, balance, and movement. At first, students focus on the external: where to place the feet, how to position the hands, how to execute a technique.

But over time, something deeper begins to develop.

Awareness.

And with awareness… comes intuition.

When you train consistently, you begin to pick up on subtle cues—your opponent’s weight shift, a slight tightening of their shoulders, a change in rhythm, a hesitation. These signals often happen too fast for conscious analysis, yet your body reacts.

You move before you think.

That is not luck.

That is trained intuition.

And at the center of that awareness is the Dan Jun.

For centuries, martial artists have been taught to focus on this area—not just for balance and power, but for presence, control, and internal awareness. What was once described in philosophical or energetic terms is now being supported by modern science through the understanding of the gut-brain connection.

What ancient martial artists developed through Dan Jun awareness is now being illuminated by neuroscience.

The body, the brain, and the gut are not separate systems—they are deeply connected. And when we train properly, we are not just strengthening muscles or learning techniques…

We are refining perception.

We are sharpening awareness.

We are developing intuition.

In a world filled with distractions, noise, and constant stimulation, this ability becomes even more valuable.

Because sometimes, the most important signals… are the quietest ones.

And the more we train—physically, mentally, and internally—the better we become at hearing them.

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By Dan Segarra, 9th Degree Black Belt in Tang Soo Do

👉 Continue your study and deepen your understanding at http://tangsoodoresource.com/