At the same time you're watching their body. Excellent mental development is achieved. Your mind, body and sword must be as one. Offense and defense are straight and to either side, with more circles than angles. Movement is usually in all different directions.
Forms are soft and hard.
Develops flexibility, coordination, strength and speed. It becomes instinct. Offense and defense is straight, but curves in all different directions and degrees. More circles than angles. Movements are slow without force or power.