Ki and Kokyu - Energy and Breath

気と呼吸 - The Foundation of Power in Aikido

At the heart of Aikido lie two concepts that distinguish this art from purely physical forms of combat: Ki (life energy) and Kokyu (breath power). These elements allow for the generation of power that does not depend on muscular strength, but rather on the harmony between mind, body, and the universe.

What is Ki (気)?

The word Ki appears in many Japanese terms: kuki (air), genki (health/energy), tenki (weather). In the context of martial arts, it represents the universal life energy that flows through all living things.

O-Sensei Morihei Ueshiba described Ki as the "vital energy of the universe." In Aikido, we do not try to accumulate Ki only for ourselves, but strive for Aiki – harmonizing our energy with that of our partner and the environment. When our Ki is "extended" (Ki no Nagare), movement becomes fluid, and the body becomes stable and difficult to move.

Kokyu (呼吸) - Breath Power

Kokyu literally means inhalation and exhalation. However, in Budo, we speak of Kokyu-ryoku – breath power. This is not the strength of the lungs, but the ability to unite the mind's intention with the body's movement through breath.

Through proper breathing, the power generated in the body's center (Hara) is transmitted to the hands and feet without unnecessary muscular tension. This is why Aikido masters can throw much stronger opponents with a smile and lightness.

Core Principles of Ki and Kokyu

Seika Tanden (脐下丹田)

The center of gravity and energy, located a few centimeters below the navel. All techniques should originate from here.

Ki no Nagare (気の流れ)

The flow of energy. Instead of stopping an attack, we let the energy flow, taking it over and directing it in a direction that is safe for us.

Kokyu-ho (呼吸法)

Breathing exercises that teach how to synchronize breath with a partner's movement to gain an advantage without using force.

Key Relational Concepts

  • Musubi (結び) – connection. Tying your energy with your partner's energy so as to become one.
  • Ma-ai (間合い) – distance and timing. The proper interval that allows for the free flow of Ki.
  • Kuzushi (崩し) – unbalancing. In Aikido, this often happens by "leading" the partner's Ki.

How to Practice Ki and Kokyu?

Developing Ki does not happen overnight. It requires:

  • Relaxation – Tense muscles block the flow of energy.
  • Awareness – Being here and now, feeling every finger and foot.
  • Regular practice of Kokyu-dosa – A seated exercise with a partner that serves as a "laboratory" for breath power.

"True power does not come from the muscles, but from the breath and unification with nature."

Morihei Ueshiba

We invite you to explore these mysteries together on the mat. Understanding Ki and Kokyu is the key to discovering the depth of Aikido as a Way (Do).