Koshi is translated as back; lower back; waist; hips; lumbar region. This is a very important and strong part of the body. How can one use this efficiently? It is often said to ‘twist the hips’. If one twist the hips then one tends to rotate the whole body and rotating the shoulders. Actually, it is not really a twist of the hip as in a pure rotational movement. It is more of a twist and thrust, the same for the movement of the shoulder. The shoulder blade should extend. Junzuki is a study of thrusting motion and gyakuzuki studies rotational motion to generate energy.
Tanden is the exact center of the body. It is not a muscle. It should be the primary focus of energy. It’s like a pool of continuous flowing energy. From that pool, the energy flows through the body. The point is to let all movement originate from tanden.
Wadoryu doesn’t start movement from contraction. Start movement from relaxation instead of contraction. The knees, ankles, heels, shoulders, head etcetera all facilitate movement. The origin of energy is tanden.
They key is to distribute and use the energy from tanden to move and to transfer that energy into the opponent without losing energy in anything other then the opponent. Seiza and mokuso are the start of tanden practice.
KIHON 基本