Principles


Yu(Soft)


Master Yoo Hap Ki DoIn Hap Ki Do practice, one does not stop an attacker’s force directly with force, but redirects it. If one will imagine a stream flowing rapidly down a mountain, and then imagine that one must change the direction of the water flow. The problems one must overcome are apparent. Constructing a dam perpendicular to the flow is obviously not the solution. However if one would simply divert its flow, success would be realized. One does not stop an attacker’s punch by applying force in direct opposition to the attack. By applying force to the side, tangentially, the attack can be diverted and less energy expended. In Hap Ki Do this counts for the attacker as well as the defender. The defender does not interrupt the attack but he lets it flow, like his techniques. Water is very soft, but when it flows towards one point it has devastating power. The movements in Hap Ki Do are very gentle and soft. But when it is used, it is all concentrated towards a single point.

Won (Circle)


The theory of the circle is emphasized in Hap Ki Do training. In actual practice, when an opponent punches, if this punch does not trespass into one’s circle, there is no need to block. If one chooses to block, it is considered a waste of time and energy.

When an opponent’s punch does penetrate the circle, it should be received indirectly. Leading this force in a circle minimizes its effects. Utilizing a circle or winding block not only disrupts an opponent’s force but also sets the position for counter attack.

Furthermore adhering to the circle theory with one’s kicking techniques allows one to continuously counter and maintain power and balance. Countering with techniques that are directed at an opponent along a straight line and then returning it along the same line will prove less effective.

Wha (Harmony)


In Hap Ki Do training there must exist a simultaneous combination of your spirit, your body, environment, and techniques. After one achieves harmony with oneself, the next requirement is to harmonize with one’s opponent. Accomplishing this, one will find it quite easy to read the minds of others. It is very important to be able to know what your opponent is thinking and adapt to his attack so that harmony is not disturbed. When these things are in harmony we release the energy we call ”Ki”.

Learning to harmonize with the environment is the next stage. The final task is blending the harmony one has developed with himself, his opponent, and the environment with his techniques.



Hap Ki Do covers an extensive variety of martial art techniques, but it is not merely concerned with methods of attack and defense. Hap Ki Do also includes the study of healing techniques and the development of internal power in addition to physical training. Mental development is of equal importance in Hap Ki Do. It helps to instill self-confidence and self-discipline, a calm self-assurance, and the psychological and spiritual values that are traditionally associated with the character of a martial artist.

Hap Ki Do focuses on the coordination of the mind and body. Its central theme is the use of Ki (inner power) through controlled breathing, meditation exercises, and physical techniques. Hap Ki Do teaches how to coordinate spiritual and physical power, the basis of a human being. A student learns how to live better within the natural laws of the universe.

Hap Ki Do Movement and Principles



The movement of Hap Ki Do is the dynamic movement of the universal energy forces. The power of Hap Ki Do is the power of a strong unified spirit, mind, and body moving in harmony with everything around it. Hap Ki Do training is done to challenge oneself, not others. You will develop confidence by facing your fears. A negative fighting spirit will become a creative spirit. The stress and pressure of serious Hap Ki Do training brings the spirit to the surface, exposing it so that it can be examined and refined in a controlled atmosphere of respect and mutual study. Discovering your physical limitations will cause you to reflect on the deepest meanings of harmony and conflict, and to strive for a level of consciousness above the selfish ego, closer to a universal consciousness.

The physical movement of Hap Ki Do is the embodiment of the principle of the spirit. Negative force is not met with force, but joined, controlled and redirected through the power and balance of the spiral movement. This is the shape of Hap Ki Do and the dynamic shape of the foundation of all the energies of existence. Hap Ki Do movement can only be understood from its roots in universal law and the process of nature. Its sincere practice and study deepens our appreciation for perfection of nature’s balance and brings us back into harmony with our environment, with other people and with ourselves.